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Finding the Third Proportional to 39,120 and 58,866

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Solution

The third proportional to 39,120 and 58,866 is: 88,578.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,120 : 58,866 = 58,866 : x
  2. Step 2: Convert to fraction form
    39,120/58,866 = 58,866/x
  3. Step 3: Cross multiply
    39,120x = 58,866 × 58,866
  4. Step 4: Simplify right side
    39,120x = 3,465,205,956
  5. Step 5: Solve for x
    x = 3,465,205,956/39,120
  6. Step 6: Final answer
    x = 88,578.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.