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Finding the Fourth Proportional to 87,293.61, 130,838.86 and 49,879.91

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Solution

The fourth proportional to 87,293.61, 130,838.86 and 49,879.91 is: 74,761.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,293.61 : 130,838.86 = 49,879.91 : x
  2. Step 2: Convert to fraction form
    87,293.61/130,838.86 = 49,879.91/x
  3. Step 3: Cross multiply
    87,293.61x = 130,838.86 × 49,879.91
  4. Step 4: Simplify right side
    87,293.61x = 6,526,230,311.90
  5. Step 5: Solve for x
    x = 6,526,230,311.90/87,293.61
  6. Step 6: Final answer
    x = 74,761.83

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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.