Home / 87,690.26-120,982.95-49,937.78

Finding the Fourth Proportional to 87,690.26, 120,982.95 and 49,937.78

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Solution

The fourth proportional to 87,690.26, 120,982.95 and 49,937.78 is: 68,897.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,690.26 : 120,982.95 = 49,937.78 : x
  2. Step 2: Convert to fraction form
    87,690.26/120,982.95 = 49,937.78/x
  3. Step 3: Cross multiply
    87,690.26x = 120,982.95 × 49,937.78
  4. Step 4: Simplify right side
    87,690.26x = 6,041,619,940.85
  5. Step 5: Solve for x
    x = 6,041,619,940.85/87,690.26
  6. Step 6: Final answer
    x = 68,897.27

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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.