Home / 87,148.78-120,265.32-49,423.03

Finding the Fourth Proportional to 87,148.78, 120,265.32 and 49,423.03

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Solution

The fourth proportional to 87,148.78, 120,265.32 and 49,423.03 is: 68,203.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,148.78 : 120,265.32 = 49,423.03 : x
  2. Step 2: Convert to fraction form
    87,148.78/120,265.32 = 49,423.03/x
  3. Step 3: Cross multiply
    87,148.78x = 120,265.32 × 49,423.03
  4. Step 4: Simplify right side
    87,148.78x = 5,943,876,668.65
  5. Step 5: Solve for x
    x = 5,943,876,668.65/87,148.78
  6. Step 6: Final answer
    x = 68,203.78

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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.