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Finding the Fourth Proportional to 47,631, 71,428.68 and 38,247.96

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Solution

The fourth proportional to 47,631, 71,428.68 and 38,247.96 is: 57,357.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,631 : 71,428.68 = 38,247.96 : x
  2. Step 2: Convert to fraction form
    47,631/71,428.68 = 38,247.96/x
  3. Step 3: Cross multiply
    47,631x = 71,428.68 × 38,247.96
  4. Step 4: Simplify right side
    47,631x = 2,732,001,295.49
  5. Step 5: Solve for x
    x = 2,732,001,295.49/47,631
  6. Step 6: Final answer
    x = 57,357.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.