Home / 89,790.33-123,909.21-49,507.86

Finding the Fourth Proportional to 89,790.33, 123,909.21 and 49,507.86

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Solution

The fourth proportional to 89,790.33, 123,909.21 and 49,507.86 is: 68,320.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,790.33 : 123,909.21 = 49,507.86 : x
  2. Step 2: Convert to fraction form
    89,790.33/123,909.21 = 49,507.86/x
  3. Step 3: Cross multiply
    89,790.33x = 123,909.21 × 49,507.86
  4. Step 4: Simplify right side
    89,790.33x = 6,134,479,821.39
  5. Step 5: Solve for x
    x = 6,134,479,821.39/89,790.33
  6. Step 6: Final answer
    x = 68,320.05

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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.