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Finding the Third Proportional to 31,332 and 68,424

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Solution

The third proportional to 31,332 and 68,424 is: 149,426.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,332 : 68,424 = 68,424 : x
  2. Step 2: Convert to fraction form
    31,332/68,424 = 68,424/x
  3. Step 3: Cross multiply
    31,332x = 68,424 × 68,424
  4. Step 4: Simplify right side
    31,332x = 4,681,843,776
  5. Step 5: Solve for x
    x = 4,681,843,776/31,332
  6. Step 6: Final answer
    x = 149,426.90

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.