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Finding the Third Proportional to 18,687.50 and 39,797

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Solution

The third proportional to 18,687.50 and 39,797 is: 84,751.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,687.50 : 39,797 = 39,797 : x
  2. Step 2: Convert to fraction form
    18,687.50/39,797 = 39,797/x
  3. Step 3: Cross multiply
    18,687.50x = 39,797 × 39,797
  4. Step 4: Simplify right side
    18,687.50x = 1,583,801,209
  5. Step 5: Solve for x
    x = 1,583,801,209/18,687.50
  6. Step 6: Final answer
    x = 84,751.90

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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.