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Finding the Third Proportional to 39,139 and 52,430

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Solution

The third proportional to 39,139 and 52,430 is: 70,234.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,139 : 52,430 = 52,430 : x
  2. Step 2: Convert to fraction form
    39,139/52,430 = 52,430/x
  3. Step 3: Cross multiply
    39,139x = 52,430 × 52,430
  4. Step 4: Simplify right side
    39,139x = 2,748,904,900
  5. Step 5: Solve for x
    x = 2,748,904,900/39,139
  6. Step 6: Final answer
    x = 70,234.42

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.