Home / 87,112.40-120,211.71-49,385.84

Finding the Fourth Proportional to 87,112.40, 120,211.71 and 49,385.84

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Solution

The fourth proportional to 87,112.40, 120,211.71 and 49,385.84 is: 68,150.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,112.40 : 120,211.71 = 49,385.84 : x
  2. Step 2: Convert to fraction form
    87,112.40/120,211.71 = 49,385.84/x
  3. Step 3: Cross multiply
    87,112.40x = 120,211.71 × 49,385.84
  4. Step 4: Simplify right side
    87,112.40x = 5,936,756,276.19
  5. Step 5: Solve for x
    x = 5,936,756,276.19/87,112.40
  6. Step 6: Final answer
    x = 68,150.53

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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.