An equilateral triangle and a square both have perimeters of 48 inches. What is the ratio of the length of the side of the triangle to the length of the side of the square? Express your answer as a common fraction.
Side of square = 48/4 = 12 in
Side of equilateral triangle = 48/3 = 16 in
side of triangle / side of square = 16 /12 = 4 / 3