Home / 87,909.60-131,771.44-28,729.40

Finding the Fourth Proportional to 87,909.60, 131,771.44 and 28,729.40

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Solution

The fourth proportional to 87,909.60, 131,771.44 and 28,729.40 is: 43,063.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,909.60 : 131,771.44 = 28,729.40 : x
  2. Step 2: Convert to fraction form
    87,909.60/131,771.44 = 28,729.40/x
  3. Step 3: Cross multiply
    87,909.60x = 131,771.44 × 28,729.40
  4. Step 4: Simplify right side
    87,909.60x = 3,785,714,408.34
  5. Step 5: Solve for x
    x = 3,785,714,408.34/87,909.60
  6. Step 6: Final answer
    x = 43,063.72

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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.