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Finding the Fourth Proportional to 87,600.72, 120,888.99 and 47,314.47

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Solution

The fourth proportional to 87,600.72, 120,888.99 and 47,314.47 is: 65,293.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,600.72 : 120,888.99 = 47,314.47 : x
  2. Step 2: Convert to fraction form
    87,600.72/120,888.99 = 47,314.47/x
  3. Step 3: Cross multiply
    87,600.72x = 120,888.99 × 47,314.47
  4. Step 4: Simplify right side
    87,600.72x = 5,719,798,490.69
  5. Step 5: Solve for x
    x = 5,719,798,490.69/87,600.72
  6. Step 6: Final answer
    x = 65,293.97

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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.