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Finding the Third Proportional to 47,691 and 70,149

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Solution

The third proportional to 47,691 and 70,149 is: 103,182.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,691 : 70,149 = 70,149 : x
  2. Step 2: Convert to fraction form
    47,691/70,149 = 70,149/x
  3. Step 3: Cross multiply
    47,691x = 70,149 × 70,149
  4. Step 4: Simplify right side
    47,691x = 4,920,882,201
  5. Step 5: Solve for x
    x = 4,920,882,201/47,691
  6. Step 6: Final answer
    x = 103,182.62

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.