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Finding the Third Proportional to 31,062 and 39,897

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Solution

The third proportional to 31,062 and 39,897 is: 51,244.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,062 : 39,897 = 39,897 : x
  2. Step 2: Convert to fraction form
    31,062/39,897 = 39,897/x
  3. Step 3: Cross multiply
    31,062x = 39,897 × 39,897
  4. Step 4: Simplify right side
    31,062x = 1,591,770,609
  5. Step 5: Solve for x
    x = 1,591,770,609/31,062
  6. Step 6: Final answer
    x = 51,244.95

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Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.