It's about as tall as The Hollywood Sign.
It's about one-and-one-tenth times as long as a Semitrailer.
In other words, 49 feet is 1.021 times the length of a Semitrailer, and the length of a Semitrailer is 0.97940 times that amount.(a.k.a. semi-trailer truck, a.k.a. semi, a.k.a. tractor-trailer, a.k.a. truck and trailer, a.k.a. eighteen-wheeler, a.k.a. big rig, a.k.a. Mack truck, a.k.a. transport, a.k.a. lorry, a.k.a. artic; for box truck; United States Federal length limits)
According to the United States Department of Transportation (DOT), the maximum allowable length of a semitrailer pulled by a road tractor truck is 48 feet (unless superseded by state law). These regulations also allow the vehicles to tow up to 36,000 kg in gross weight.
It's about one-and-one-tenth times as tall as a Brachiosaurus.
In other words, the height of a Brachiosaurus is 0.910 times 49 feet.(based on comparable bone measurements, height to head)
Dinosaurs in the genus Brachiosaurus had an estimated height (at the head with neck fully extended) of up to 43 feet. A resin cast of the first Brachiosaurus specimen, owned by the Field Museum in Chicago, is currently on display at the O'Hare International Airport.
It's about four-fifths as long as a Bowling Lane.
In other words, 49 feet is 0.779660 times the length of a Bowling Lane, and the length of a Bowling Lane is 1.28260 times that amount.(USBC specifications; tenpin; including pin deck)
According to the United States Bowling Congress specifications, a tenpin bowling lane should measure 62.8480 feet. In a Professional Bowling Association game, the lane must be lubricated by about 25 ml (0.85 fl. oz) of oil.
It's about three-fourths as long as a Cricket Pitch.
In other words, 49 feet is 0.7424240 times the length of a Cricket Pitch, and the length of a Cricket Pitch is 1.346940 times that amount.(per Marylebone Cricket Council / International Cricket Council Law #6)
The length of a cricket pitch, from one bowling crease to the other, is 66 feet. The wickets at either end of the pitch stand 2.36220 feet tall including the bails.
It's about one-and-two-fifths times as tall as a Telephone Pole.
In other words, the height of a Telephone Pole is 0.710 times 49 feet.(a.k.a. Utility Pole, a.k.a Power Pole, a.k.a. Telegraph Pole, a.k.a. Telegraph Post, a.k.a. Hydro Pole) (exposed height; per Florida Public Service Commission average)
A standard telephone pole is 36 feet tall. Despite alternatives, most telephone poles in the US are made of wood — most commonly pine — and have a lifespan of 25 to 50 years, depending on climate and preservatives applied.
It's about one-and-four-fifths times as long as a London bus.
In other words, 49 feet is 1.780 times the length of a London bus, and the length of a London bus is 0.5620 times that amount.(Routemaster Double-Decker, RM standard specification)
The Routemaster Double-Decker buses, well-known as icons of London, measure 27.50 feet in length. The buses were said to be well-designed for travel in the London traffic, as they offered an open door for riders to board and exit even while the bus was moving at low speeds, and a full-time conductor to collect fares.