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Finding the Third Proportional to 29,406 and 63,915

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Solution

The third proportional to 29,406 and 63,915 is: 138,921.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,406 : 63,915 = 63,915 : x
  2. Step 2: Convert to fraction form
    29,406/63,915 = 63,915/x
  3. Step 3: Cross multiply
    29,406x = 63,915 × 63,915
  4. Step 4: Simplify right side
    29,406x = 4,085,127,225
  5. Step 5: Solve for x
    x = 4,085,127,225/29,406
  6. Step 6: Final answer
    x = 138,921.55

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.