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Finding the Third Proportional to 62,499 and 87,489

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Solution

The third proportional to 62,499 and 87,489 is: 122,471.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,499 : 87,489 = 87,489 : x
  2. Step 2: Convert to fraction form
    62,499/87,489 = 87,489/x
  3. Step 3: Cross multiply
    62,499x = 87,489 × 87,489
  4. Step 4: Simplify right side
    62,499x = 7,654,325,121
  5. Step 5: Solve for x
    x = 7,654,325,121/62,499
  6. Step 6: Final answer
    x = 122,471.16

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.