Home / 90,960.80-136,441.20-28,631.30

Finding the Fourth Proportional to 90,960.80, 136,441.20 and 28,631.30

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Solution

The fourth proportional to 90,960.80, 136,441.20 and 28,631.30 is: 42,946.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,960.80 : 136,441.20 = 28,631.30 : x
  2. Step 2: Convert to fraction form
    90,960.80/136,441.20 = 28,631.30/x
  3. Step 3: Cross multiply
    90,960.80x = 136,441.20 × 28,631.30
  4. Step 4: Simplify right side
    90,960.80x = 3,906,488,929.56
  5. Step 5: Solve for x
    x = 3,906,488,929.56/90,960.80
  6. Step 6: Final answer
    x = 42,946.95

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Similar ratio
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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.