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Finding the Third Proportional to 28,427 and 39,762

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Solution

The third proportional to 28,427 and 39,762 is: 55,616.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,427 : 39,762 = 39,762 : x
  2. Step 2: Convert to fraction form
    28,427/39,762 = 39,762/x
  3. Step 3: Cross multiply
    28,427x = 39,762 × 39,762
  4. Step 4: Simplify right side
    28,427x = 1,581,016,644
  5. Step 5: Solve for x
    x = 1,581,016,644/28,427
  6. Step 6: Final answer
    x = 55,616.73

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.