Home / 89,631.43-123,689.42-49,343.65

Finding the Fourth Proportional to 89,631.43, 123,689.42 and 49,343.65

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Solution

The fourth proportional to 89,631.43, 123,689.42 and 49,343.65 is: 68,093.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,631.43 : 123,689.42 = 49,343.65 : x
  2. Step 2: Convert to fraction form
    89,631.43/123,689.42 = 49,343.65/x
  3. Step 3: Cross multiply
    89,631.43x = 123,689.42 × 49,343.65
  4. Step 4: Simplify right side
    89,631.43x = 6,103,287,449.18
  5. Step 5: Solve for x
    x = 6,103,287,449.18/89,631.43
  6. Step 6: Final answer
    x = 68,093.16

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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.