Home / 89,633.28-123,689.22-49,339.17

Finding the Fourth Proportional to 89,633.28, 123,689.22 and 49,339.17

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Solution

The fourth proportional to 89,633.28, 123,689.22 and 49,339.17 is: 68,085.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,633.28 : 123,689.22 = 49,339.17 : x
  2. Step 2: Convert to fraction form
    89,633.28/123,689.22 = 49,339.17/x
  3. Step 3: Cross multiply
    89,633.28x = 123,689.22 × 49,339.17
  4. Step 4: Simplify right side
    89,633.28x = 6,102,723,376.70
  5. Step 5: Solve for x
    x = 6,102,723,376.70/89,633.28
  6. Step 6: Final answer
    x = 68,085.47

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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.