Home / 89,785.67-123,905.07-49,500.86

Finding the Fourth Proportional to 89,785.67, 123,905.07 and 49,500.86

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Solution

The fourth proportional to 89,785.67, 123,905.07 and 49,500.86 is: 68,311.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,785.67 : 123,905.07 = 49,500.86 : x
  2. Step 2: Convert to fraction form
    89,785.67/123,905.07 = 49,500.86/x
  3. Step 3: Cross multiply
    89,785.67x = 123,905.07 × 49,500.86
  4. Step 4: Simplify right side
    89,785.67x = 6,133,407,523.36
  5. Step 5: Solve for x
    x = 6,133,407,523.36/89,785.67
  6. Step 6: Final answer
    x = 68,311.65

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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.