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Finding the Third Proportional to 39,708 and 54,603

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Solution

The third proportional to 39,708 and 54,603 is: 75,085.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,708 : 54,603 = 54,603 : x
  2. Step 2: Convert to fraction form
    39,708/54,603 = 54,603/x
  3. Step 3: Cross multiply
    39,708x = 54,603 × 54,603
  4. Step 4: Simplify right side
    39,708x = 2,981,487,609
  5. Step 5: Solve for x
    x = 2,981,487,609/39,708
  6. Step 6: Final answer
    x = 75,085.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.