Home / 89,789.76-123,904.04-49,503.86

Finding the Fourth Proportional to 89,789.76, 123,904.04 and 49,503.86

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Solution

The fourth proportional to 89,789.76, 123,904.04 and 49,503.86 is: 68,312.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,789.76 : 123,904.04 = 49,503.86 : x
  2. Step 2: Convert to fraction form
    89,789.76/123,904.04 = 49,503.86/x
  3. Step 3: Cross multiply
    89,789.76x = 123,904.04 × 49,503.86
  4. Step 4: Simplify right side
    89,789.76x = 6,133,728,249.59
  5. Step 5: Solve for x
    x = 6,133,728,249.59/89,789.76
  6. Step 6: Final answer
    x = 68,312.11

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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.