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Finding the Fourth Proportional to 49,892.80, 74,834.88 and 20,313.76

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Solution

The fourth proportional to 49,892.80, 74,834.88 and 20,313.76 is: 30,468.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,892.80 : 74,834.88 = 20,313.76 : x
  2. Step 2: Convert to fraction form
    49,892.80/74,834.88 = 20,313.76/x
  3. Step 3: Cross multiply
    49,892.80x = 74,834.88 × 20,313.76
  4. Step 4: Simplify right side
    49,892.80x = 1,520,177,791.95
  5. Step 5: Solve for x
    x = 1,520,177,791.95/49,892.80
  6. Step 6: Final answer
    x = 30,468.88

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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.