Home / 87,694.26-120,988.47-49,941.78

Finding the Fourth Proportional to 87,694.26, 120,988.47 and 49,941.78

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Solution

The fourth proportional to 87,694.26, 120,988.47 and 49,941.78 is: 68,902.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,694.26 : 120,988.47 = 49,941.78 : x
  2. Step 2: Convert to fraction form
    87,694.26/120,988.47 = 49,941.78/x
  3. Step 3: Cross multiply
    87,694.26x = 120,988.47 × 49,941.78
  4. Step 4: Simplify right side
    87,694.26x = 6,042,379,551.28
  5. Step 5: Solve for x
    x = 6,042,379,551.28/87,694.26
  6. Step 6: Final answer
    x = 68,902.79

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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.