Home / 87,408.20-131,112.30-49,953.80

Finding the Fourth Proportional to 87,408.20, 131,112.30 and 49,953.80

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Solution

The fourth proportional to 87,408.20, 131,112.30 and 49,953.80 is: 74,930.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,408.20 : 131,112.30 = 49,953.80 : x
  2. Step 2: Convert to fraction form
    87,408.20/131,112.30 = 49,953.80/x
  3. Step 3: Cross multiply
    87,408.20x = 131,112.30 × 49,953.80
  4. Step 4: Simplify right side
    87,408.20x = 6,549,557,611.74
  5. Step 5: Solve for x
    x = 6,549,557,611.74/87,408.20
  6. Step 6: Final answer
    x = 74,930.70

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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.