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Finding the Third Proportional to 38,800 and 82,687

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Solution

The third proportional to 38,800 and 82,687 is: 176,214.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,800 : 82,687 = 82,687 : x
  2. Step 2: Convert to fraction form
    38,800/82,687 = 82,687/x
  3. Step 3: Cross multiply
    38,800x = 82,687 × 82,687
  4. Step 4: Simplify right side
    38,800x = 6,837,139,969
  5. Step 5: Solve for x
    x = 6,837,139,969/38,800
  6. Step 6: Final answer
    x = 176,214.95

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.