Home / 87,685.60-131,528.40-54,443.20

Finding the Fourth Proportional to 87,685.60, 131,528.40 and 54,443.20

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Solution

The fourth proportional to 87,685.60, 131,528.40 and 54,443.20 is: 81,664.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,685.60 : 131,528.40 = 54,443.20 : x
  2. Step 2: Convert to fraction form
    87,685.60/131,528.40 = 54,443.20/x
  3. Step 3: Cross multiply
    87,685.60x = 131,528.40 × 54,443.20
  4. Step 4: Simplify right side
    87,685.60x = 7,160,826,986.88
  5. Step 5: Solve for x
    x = 7,160,826,986.88/87,685.60
  6. Step 6: Final answer
    x = 81,664.80

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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.