Home / 89,821.28-123,960.75-49,538.86

Finding the Fourth Proportional to 89,821.28, 123,960.75 and 49,538.86

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Solution

The fourth proportional to 89,821.28, 123,960.75 and 49,538.86 is: 68,367.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,821.28 : 123,960.75 = 49,538.86 : x
  2. Step 2: Convert to fraction form
    89,821.28/123,960.75 = 49,538.86/x
  3. Step 3: Cross multiply
    89,821.28x = 123,960.75 × 49,538.86
  4. Step 4: Simplify right side
    89,821.28x = 6,140,874,208.93
  5. Step 5: Solve for x
    x = 6,140,874,208.93/89,821.28
  6. Step 6: Final answer
    x = 68,367.70

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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.