There are two flagpoles in a field. The first flagpole is 100 feet tall. The second flagpole is as tall as the first flagpole's shadow is long. The second flagpole's shadow is 36 feet long. How many feet tall is the second flagpole?
100 ft is to x as x is to 36 ft where x is the height of the scond pole (and the length of shadow1 )
100/x = x/36
x^2 = 3600
x = 60 ft