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Finding the Fourth Proportional to 40,487.40, 60,731.10 and 29,341.80

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Solution

The fourth proportional to 40,487.40, 60,731.10 and 29,341.80 is: 44,012.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,487.40 : 60,731.10 = 29,341.80 : x
  2. Step 2: Convert to fraction form
    40,487.40/60,731.10 = 29,341.80/x
  3. Step 3: Cross multiply
    40,487.40x = 60,731.10 × 29,341.80
  4. Step 4: Simplify right side
    40,487.40x = 1,781,959,789.98
  5. Step 5: Solve for x
    x = 1,781,959,789.98/40,487.40
  6. Step 6: Final answer
    x = 44,012.70

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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.