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Finding the Fourth Proportional to 57,251.20, 85,876.80 and 50,908.90

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Solution

The fourth proportional to 57,251.20, 85,876.80 and 50,908.90 is: 76,363.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,251.20 : 85,876.80 = 50,908.90 : x
  2. Step 2: Convert to fraction form
    57,251.20/85,876.80 = 50,908.90/x
  3. Step 3: Cross multiply
    57,251.20x = 85,876.80 × 50,908.90
  4. Step 4: Simplify right side
    57,251.20x = 4,371,893,423.52
  5. Step 5: Solve for x
    x = 4,371,893,423.52/57,251.20
  6. Step 6: Final answer
    x = 76,363.35

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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.