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Finding the Third Proportional to 38,221 and 77,472

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Solution

The third proportional to 38,221 and 77,472 is: 157,031.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,221 : 77,472 = 77,472 : x
  2. Step 2: Convert to fraction form
    38,221/77,472 = 77,472/x
  3. Step 3: Cross multiply
    38,221x = 77,472 × 77,472
  4. Step 4: Simplify right side
    38,221x = 6,001,910,784
  5. Step 5: Solve for x
    x = 6,001,910,784/38,221
  6. Step 6: Final answer
    x = 157,031.76

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Why These Related Problems?

These problems maintain the same ratio (2.03) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.