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Finding the Third Proportional to 63,931 and 99,080

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Solution

The third proportional to 63,931 and 99,080 is: 153,553.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,931 : 99,080 = 99,080 : x
  2. Step 2: Convert to fraction form
    63,931/99,080 = 99,080/x
  3. Step 3: Cross multiply
    63,931x = 99,080 × 99,080
  4. Step 4: Simplify right side
    63,931x = 9,816,846,400
  5. Step 5: Solve for x
    x = 9,816,846,400/63,931
  6. Step 6: Final answer
    x = 153,553.78

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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.