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Finding the Fourth Proportional to 67,979.50, 101,991.74 and 36,382.52

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Solution

The fourth proportional to 67,979.50, 101,991.74 and 36,382.52 is: 54,585.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,979.50 : 101,991.74 = 36,382.52 : x
  2. Step 2: Convert to fraction form
    67,979.50/101,991.74 = 36,382.52/x
  3. Step 3: Cross multiply
    67,979.50x = 101,991.74 × 36,382.52
  4. Step 4: Simplify right side
    67,979.50x = 3,710,716,593.45
  5. Step 5: Solve for x
    x = 3,710,716,593.45/67,979.50
  6. Step 6: Final answer
    x = 54,585.82

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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.