Home / 87,543.08-131,104.20-49,989.40

Finding the Fourth Proportional to 87,543.08, 131,104.20 and 49,989.40

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Solution

The fourth proportional to 87,543.08, 131,104.20 and 49,989.40 is: 74,863.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,543.08 : 131,104.20 = 49,989.40 : x
  2. Step 2: Convert to fraction form
    87,543.08/131,104.20 = 49,989.40/x
  3. Step 3: Cross multiply
    87,543.08x = 131,104.20 × 49,989.40
  4. Step 4: Simplify right side
    87,543.08x = 6,553,820,295.48
  5. Step 5: Solve for x
    x = 6,553,820,295.48/87,543.08
  6. Step 6: Final answer
    x = 74,863.94

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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.