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Finding the Fourth Proportional to 75,251.52, 112,731.48 and 40,142.88

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Solution

The fourth proportional to 75,251.52, 112,731.48 and 40,142.88 is: 60,136.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,251.52 : 112,731.48 = 40,142.88 : x
  2. Step 2: Convert to fraction form
    75,251.52/112,731.48 = 40,142.88/x
  3. Step 3: Cross multiply
    75,251.52x = 112,731.48 × 40,142.88
  4. Step 4: Simplify right side
    75,251.52x = 4,525,366,273.86
  5. Step 5: Solve for x
    x = 4,525,366,273.86/75,251.52
  6. Step 6: Final answer
    x = 60,136.54

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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.