Home / 39,715-85,909

Finding the Third Proportional to 39,715 and 85,909

Calculator

Solution

The third proportional to 39,715 and 85,909 is: 185,832.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,715 : 85,909 = 85,909 : x
  2. Step 2: Convert to fraction form
    39,715/85,909 = 85,909/x
  3. Step 3: Cross multiply
    39,715x = 85,909 × 85,909
  4. Step 4: Simplify right side
    39,715x = 7,380,356,281
  5. Step 5: Solve for x
    x = 7,380,356,281/39,715
  6. Step 6: Final answer
    x = 185,832.97

Related Problems

Find third proportional to 19,857.50 and 42,954.50
Half scale
Find third proportional to 79,430 and 171,818
Double scale
Find third proportional to 39,717 and 85,913
Similar ratio
Find third proportional to 59,572.50 and 128,863.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.