Home / 87,687.55-121,007.18-49,446.49

Finding the Fourth Proportional to 87,687.55, 121,007.18 and 49,446.49

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Solution

The fourth proportional to 87,687.55, 121,007.18 and 49,446.49 is: 68,235.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,687.55 : 121,007.18 = 49,446.49 : x
  2. Step 2: Convert to fraction form
    87,687.55/121,007.18 = 49,446.49/x
  3. Step 3: Cross multiply
    87,687.55x = 121,007.18 × 49,446.49
  4. Step 4: Simplify right side
    87,687.55x = 5,983,380,315.80
  5. Step 5: Solve for x
    x = 5,983,380,315.80/87,687.55
  6. Step 6: Final answer
    x = 68,235.23

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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.