Home / 60-85.31

Finding the Third Proportional to 60 and 85.31

Calculator

Solution

The third proportional to 60 and 85.31 is: 121.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    60 : 85.31 = 85.31 : x
  2. Step 2: Convert to fraction form
    60/85.31 = 85.31/x
  3. Step 3: Cross multiply
    60x = 85.31 × 85.31
  4. Step 4: Simplify right side
    60x = 7,278.22
  5. Step 5: Solve for x
    x = 7,278.22/60
  6. Step 6: Final answer
    x = 121.30

Related Problems

Find third proportional to 30 and 42.66
Half scale
Find third proportional to 120 and 170.63
Double scale
Find third proportional to 62 and 88
Similar ratio
Find third proportional to 90 and 127.97
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.