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Finding the Third Proportional to 39,399 and 59,129

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Solution

The third proportional to 39,399 and 59,129 is: 88,739.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,399 : 59,129 = 59,129 : x
  2. Step 2: Convert to fraction form
    39,399/59,129 = 59,129/x
  3. Step 3: Cross multiply
    39,399x = 59,129 × 59,129
  4. Step 4: Simplify right side
    39,399x = 3,496,238,641
  5. Step 5: Solve for x
    x = 3,496,238,641/39,399
  6. Step 6: Final answer
    x = 88,739.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.