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Finding the Fourth Proportional to 50,612.80, 75,919.20 and 47,891.20

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Solution

The fourth proportional to 50,612.80, 75,919.20 and 47,891.20 is: 71,836.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,612.80 : 75,919.20 = 47,891.20 : x
  2. Step 2: Convert to fraction form
    50,612.80/75,919.20 = 47,891.20/x
  3. Step 3: Cross multiply
    50,612.80x = 75,919.20 × 47,891.20
  4. Step 4: Simplify right side
    50,612.80x = 3,635,861,591.04
  5. Step 5: Solve for x
    x = 3,635,861,591.04/50,612.80
  6. Step 6: Final answer
    x = 71,836.80

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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.