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Finding the Fourth Proportional to 47.12, 65.01 and 37.79

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Solution

The fourth proportional to 47.12, 65.01 and 37.79 is: 52.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    47.12 : 65.01 = 37.79 : x
  2. Step 2: Convert to fraction form
    47.12/65.01 = 37.79/x
  3. Step 3: Cross multiply
    47.12x = 65.01 × 37.79
  4. Step 4: Simplify right side
    47.12x = 2,456.73
  5. Step 5: Solve for x
    x = 2,456.73/47.12
  6. Step 6: Final answer
    x = 52.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.