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Finding the Third Proportional to 53,777 and 83,542

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Solution

The third proportional to 53,777 and 83,542 is: 129,781.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,777 : 83,542 = 83,542 : x
  2. Step 2: Convert to fraction form
    53,777/83,542 = 83,542/x
  3. Step 3: Cross multiply
    53,777x = 83,542 × 83,542
  4. Step 4: Simplify right side
    53,777x = 6,979,265,764
  5. Step 5: Solve for x
    x = 6,979,265,764/53,777
  6. Step 6: Final answer
    x = 129,781.61

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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.