Home / 54,387-84,042

Finding the Third Proportional to 54,387 and 84,042

Calculator

Solution

The third proportional to 54,387 and 84,042 is: 129,866.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,387 : 84,042 = 84,042 : x
  2. Step 2: Convert to fraction form
    54,387/84,042 = 84,042/x
  3. Step 3: Cross multiply
    54,387x = 84,042 × 84,042
  4. Step 4: Simplify right side
    54,387x = 7,063,057,764
  5. Step 5: Solve for x
    x = 7,063,057,764/54,387
  6. Step 6: Final answer
    x = 129,866.65

Related Problems

Find third proportional to 27,193.50 and 42,021
Half scale
Find third proportional to 108,774 and 168,084
Double scale
Find third proportional to 54,389 and 84,045
Similar ratio
Find third proportional to 81,580.50 and 126,063
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.