Home / 87,620.60-131,430.90-28,458.20

Finding the Fourth Proportional to 87,620.60, 131,430.90 and 28,458.20

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Solution

The fourth proportional to 87,620.60, 131,430.90 and 28,458.20 is: 42,687.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,620.60 : 131,430.90 = 28,458.20 : x
  2. Step 2: Convert to fraction form
    87,620.60/131,430.90 = 28,458.20/x
  3. Step 3: Cross multiply
    87,620.60x = 131,430.90 × 28,458.20
  4. Step 4: Simplify right side
    87,620.60x = 3,740,286,838.38
  5. Step 5: Solve for x
    x = 3,740,286,838.38/87,620.60
  6. Step 6: Final answer
    x = 42,687.30

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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.