Home / 48-72.75

Finding the Third Proportional to 48 and 72.75

Calculator

Solution

The third proportional to 48 and 72.75 is: 110.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    48 : 72.75 = 72.75 : x
  2. Step 2: Convert to fraction form
    48/72.75 = 72.75/x
  3. Step 3: Cross multiply
    48x = 72.75 × 72.75
  4. Step 4: Simplify right side
    48x = 5,292.56
  5. Step 5: Solve for x
    x = 5,292.56/48
  6. Step 6: Final answer
    x = 110.26

Related Problems

Find third proportional to 24 and 36.38
Half scale
Find third proportional to 96 and 145.50
Double scale
Find third proportional to 50 and 76
Similar ratio
Find third proportional to 72 and 109.13
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.