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Finding the Third Proportional to 55,010 and 84,387

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Solution

The third proportional to 55,010 and 84,387 is: 129,452.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,010 : 84,387 = 84,387 : x
  2. Step 2: Convert to fraction form
    55,010/84,387 = 84,387/x
  3. Step 3: Cross multiply
    55,010x = 84,387 × 84,387
  4. Step 4: Simplify right side
    55,010x = 7,121,165,769
  5. Step 5: Solve for x
    x = 7,121,165,769/55,010
  6. Step 6: Final answer
    x = 129,452.20

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.