Home / 68,979.33-95,191.38-40,318.70

Finding the Fourth Proportional to 68,979.33, 95,191.38 and 40,318.70

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Solution

The fourth proportional to 68,979.33, 95,191.38 and 40,318.70 is: 55,639.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,979.33 : 95,191.38 = 40,318.70 : x
  2. Step 2: Convert to fraction form
    68,979.33/95,191.38 = 40,318.70/x
  3. Step 3: Cross multiply
    68,979.33x = 95,191.38 × 40,318.70
  4. Step 4: Simplify right side
    68,979.33x = 3,837,992,216.85
  5. Step 5: Solve for x
    x = 3,837,992,216.85/68,979.33
  6. Step 6: Final answer
    x = 55,639.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.