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Finding the Third Proportional to 47.88 and 69.13

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Solution

The third proportional to 47.88 and 69.13 is: 99.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    47.88 : 69.13 = 69.13 : x
  2. Step 2: Convert to fraction form
    47.88/69.13 = 69.13/x
  3. Step 3: Cross multiply
    47.88x = 69.13 × 69.13
  4. Step 4: Simplify right side
    47.88x = 4,778.27
  5. Step 5: Solve for x
    x = 4,778.27/47.88
  6. Step 6: Final answer
    x = 99.81

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Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.