Home / 87,686.49-131,549.22-40,913.85

Finding the Fourth Proportional to 87,686.49, 131,549.22 and 40,913.85

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Solution

The fourth proportional to 87,686.49, 131,549.22 and 40,913.85 is: 61,379.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,686.49 : 131,549.22 = 40,913.85 : x
  2. Step 2: Convert to fraction form
    87,686.49/131,549.22 = 40,913.85/x
  3. Step 3: Cross multiply
    87,686.49x = 131,549.22 × 40,913.85
  4. Step 4: Simplify right side
    87,686.49x = 5,382,185,054.70
  5. Step 5: Solve for x
    x = 5,382,185,054.70/87,686.49
  6. Step 6: Final answer
    x = 61,379.87

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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.