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Finding the Third Proportional to 18,306 and 39,771

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Solution

The third proportional to 18,306 and 39,771 is: 86,405.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,306 : 39,771 = 39,771 : x
  2. Step 2: Convert to fraction form
    18,306/39,771 = 39,771/x
  3. Step 3: Cross multiply
    18,306x = 39,771 × 39,771
  4. Step 4: Simplify right side
    18,306x = 1,581,732,441
  5. Step 5: Solve for x
    x = 1,581,732,441/18,306
  6. Step 6: Final answer
    x = 86,405.14

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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.