Home / 87,933.60-131,900.40-28,771.20

Finding the Fourth Proportional to 87,933.60, 131,900.40 and 28,771.20

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Solution

The fourth proportional to 87,933.60, 131,900.40 and 28,771.20 is: 43,156.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,933.60 : 131,900.40 = 28,771.20 : x
  2. Step 2: Convert to fraction form
    87,933.60/131,900.40 = 28,771.20/x
  3. Step 3: Cross multiply
    87,933.60x = 131,900.40 × 28,771.20
  4. Step 4: Simplify right side
    87,933.60x = 3,794,932,788.48
  5. Step 5: Solve for x
    x = 3,794,932,788.48/87,933.60
  6. Step 6: Final answer
    x = 43,156.80

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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.