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Finding the Fourth Proportional to 31,473.88, 47,211.02 and 8,100.52

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Solution

The fourth proportional to 31,473.88, 47,211.02 and 8,100.52 is: 12,150.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,473.88 : 47,211.02 = 8,100.52 : x
  2. Step 2: Convert to fraction form
    31,473.88/47,211.02 = 8,100.52/x
  3. Step 3: Cross multiply
    31,473.88x = 47,211.02 × 8,100.52
  4. Step 4: Simplify right side
    31,473.88x = 382,433,811.73
  5. Step 5: Solve for x
    x = 382,433,811.73/31,473.88
  6. Step 6: Final answer
    x = 12,150.83

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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.