Home / 87,579.92-131,369.76-28,421.48

Finding the Fourth Proportional to 87,579.92, 131,369.76 and 28,421.48

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Solution

The fourth proportional to 87,579.92, 131,369.76 and 28,421.48 is: 42,632.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,579.92 : 131,369.76 = 28,421.48 : x
  2. Step 2: Convert to fraction form
    87,579.92/131,369.76 = 28,421.48/x
  3. Step 3: Cross multiply
    87,579.92x = 131,369.76 × 28,421.48
  4. Step 4: Simplify right side
    87,579.92x = 3,733,723,006.44
  5. Step 5: Solve for x
    x = 3,733,723,006.44/87,579.92
  6. Step 6: Final answer
    x = 42,632.18

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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.