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Finding the Third Proportional to 38,313 and 81,234

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Solution

The third proportional to 38,313 and 81,234 is: 172,238.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,313 : 81,234 = 81,234 : x
  2. Step 2: Convert to fraction form
    38,313/81,234 = 81,234/x
  3. Step 3: Cross multiply
    38,313x = 81,234 × 81,234
  4. Step 4: Simplify right side
    38,313x = 6,598,962,756
  5. Step 5: Solve for x
    x = 6,598,962,756/38,313
  6. Step 6: Final answer
    x = 172,238.22

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.