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Finding the Third Proportional to 39,712 and 82,692

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Solution

The third proportional to 39,712 and 82,692 is: 172,188.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,712 : 82,692 = 82,692 : x
  2. Step 2: Convert to fraction form
    39,712/82,692 = 82,692/x
  3. Step 3: Cross multiply
    39,712x = 82,692 × 82,692
  4. Step 4: Simplify right side
    39,712x = 6,837,966,864
  5. Step 5: Solve for x
    x = 6,837,966,864/39,712
  6. Step 6: Final answer
    x = 172,188.93

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.