Home / 87,600.60-131,421.78-28,436.40

Finding the Fourth Proportional to 87,600.60, 131,421.78 and 28,436.40

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Solution

The fourth proportional to 87,600.60, 131,421.78 and 28,436.40 is: 42,661.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,600.60 : 131,421.78 = 28,436.40 : x
  2. Step 2: Convert to fraction form
    87,600.60/131,421.78 = 28,436.40/x
  3. Step 3: Cross multiply
    87,600.60x = 131,421.78 × 28,436.40
  4. Step 4: Simplify right side
    87,600.60x = 3,737,162,304.79
  5. Step 5: Solve for x
    x = 3,737,162,304.79/87,600.60
  6. Step 6: Final answer
    x = 42,661.38

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1.5x scale

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.