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Finding the Fourth Proportional to 87,280.88, 120,447.61 and 47,536.88

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Solution

The fourth proportional to 87,280.88, 120,447.61 and 47,536.88 is: 65,600.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,280.88 : 120,447.61 = 47,536.88 : x
  2. Step 2: Convert to fraction form
    87,280.88/120,447.61 = 47,536.88/x
  3. Step 3: Cross multiply
    87,280.88x = 120,447.61 × 47,536.88
  4. Step 4: Simplify right side
    87,280.88x = 5,725,702,861.78
  5. Step 5: Solve for x
    x = 5,725,702,861.78/87,280.88
  6. Step 6: Final answer
    x = 65,600.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.