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Finding the Third Proportional to 39,276 and 80,820

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Solution

The third proportional to 39,276 and 80,820 is: 166,306.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,276 : 80,820 = 80,820 : x
  2. Step 2: Convert to fraction form
    39,276/80,820 = 80,820/x
  3. Step 3: Cross multiply
    39,276x = 80,820 × 80,820
  4. Step 4: Simplify right side
    39,276x = 6,531,872,400
  5. Step 5: Solve for x
    x = 6,531,872,400/39,276
  6. Step 6: Final answer
    x = 166,306.97

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Why These Related Problems?

These problems maintain the same ratio (2.06) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.