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Finding the Fourth Proportional to 67,981.20, 101,770.20 and 50,528.40

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Solution

The fourth proportional to 67,981.20, 101,770.20 and 50,528.40 is: 75,642.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,981.20 : 101,770.20 = 50,528.40 : x
  2. Step 2: Convert to fraction form
    67,981.20/101,770.20 = 50,528.40/x
  3. Step 3: Cross multiply
    67,981.20x = 101,770.20 × 50,528.40
  4. Step 4: Simplify right side
    67,981.20x = 5,142,285,373.68
  5. Step 5: Solve for x
    x = 5,142,285,373.68/67,981.20
  6. Step 6: Final answer
    x = 75,642.76

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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.