Home / 87,621.20-131,464.20-28,458.80

Finding the Fourth Proportional to 87,621.20, 131,464.20 and 28,458.80

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Solution

The fourth proportional to 87,621.20, 131,464.20 and 28,458.80 is: 42,698.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,621.20 : 131,464.20 = 28,458.80 : x
  2. Step 2: Convert to fraction form
    87,621.20/131,464.20 = 28,458.80/x
  3. Step 3: Cross multiply
    87,621.20x = 131,464.20 × 28,458.80
  4. Step 4: Simplify right side
    87,621.20x = 3,741,313,374.96
  5. Step 5: Solve for x
    x = 3,741,313,374.96/87,621.20
  6. Step 6: Final answer
    x = 42,698.72

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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.