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Finding the Fourth Proportional to 71,472.70, 107,073.72 and 47,708.59

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Solution

The fourth proportional to 71,472.70, 107,073.72 and 47,708.59 is: 71,472.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,472.70 : 107,073.72 = 47,708.59 : x
  2. Step 2: Convert to fraction form
    71,472.70/107,073.72 = 47,708.59/x
  3. Step 3: Cross multiply
    71,472.70x = 107,073.72 × 47,708.59
  4. Step 4: Simplify right side
    71,472.70x = 5,108,336,118.48
  5. Step 5: Solve for x
    x = 5,108,336,118.48/71,472.70
  6. Step 6: Final answer
    x = 71,472.55

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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.