Home / 38,416-81,389

Finding the Third Proportional to 38,416 and 81,389

Calculator

Solution

The third proportional to 38,416 and 81,389 is: 172,432.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,416 : 81,389 = 81,389 : x
  2. Step 2: Convert to fraction form
    38,416/81,389 = 81,389/x
  3. Step 3: Cross multiply
    38,416x = 81,389 × 81,389
  4. Step 4: Simplify right side
    38,416x = 6,624,169,321
  5. Step 5: Solve for x
    x = 6,624,169,321/38,416
  6. Step 6: Final answer
    x = 172,432.56

Related Problems

Find third proportional to 19,208 and 40,694.50
Half scale
Find third proportional to 76,832 and 162,778
Double scale
Find third proportional to 38,418 and 81,393
Similar ratio
Find third proportional to 57,624 and 122,083.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.