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Finding the Fourth Proportional to 47,472.40, 71,131.80 and 29,910.80

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Solution

The fourth proportional to 47,472.40, 71,131.80 and 29,910.80 is: 44,817.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,472.40 : 71,131.80 = 29,910.80 : x
  2. Step 2: Convert to fraction form
    47,472.40/71,131.80 = 29,910.80/x
  3. Step 3: Cross multiply
    47,472.40x = 71,131.80 × 29,910.80
  4. Step 4: Simplify right side
    47,472.40x = 2,127,609,043.44
  5. Step 5: Solve for x
    x = 2,127,609,043.44/47,472.40
  6. Step 6: Final answer
    x = 44,817.81

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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.