Home / 89,789.09-123,909.79-49,504.29

Finding the Fourth Proportional to 89,789.09, 123,909.79 and 49,504.29

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Solution

The fourth proportional to 89,789.09, 123,909.79 and 49,504.29 is: 68,316.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,789.09 : 123,909.79 = 49,504.29 : x
  2. Step 2: Convert to fraction form
    89,789.09/123,909.79 = 49,504.29/x
  3. Step 3: Cross multiply
    89,789.09x = 123,909.79 × 49,504.29
  4. Step 4: Simplify right side
    89,789.09x = 6,134,066,588.66
  5. Step 5: Solve for x
    x = 6,134,066,588.66/89,789.09
  6. Step 6: Final answer
    x = 68,316.39

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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.