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Finding the Fourth Proportional to 87,399, 131,120.37 and 37,454.40

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Solution

The fourth proportional to 87,399, 131,120.37 and 37,454.40 is: 56,190.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,399 : 131,120.37 = 37,454.40 : x
  2. Step 2: Convert to fraction form
    87,399/131,120.37 = 37,454.40/x
  3. Step 3: Cross multiply
    87,399x = 131,120.37 × 37,454.40
  4. Step 4: Simplify right side
    87,399x = 4,911,034,786.13
  5. Step 5: Solve for x
    x = 4,911,034,786.13/87,399
  6. Step 6: Final answer
    x = 56,190.97

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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.