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Finding the Fourth Proportional to 39,794.96, 54,917.02 and 21,891.13

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Solution

The fourth proportional to 39,794.96, 54,917.02 and 21,891.13 is: 30,209.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,794.96 : 54,917.02 = 21,891.13 : x
  2. Step 2: Convert to fraction form
    39,794.96/54,917.02 = 21,891.13/x
  3. Step 3: Cross multiply
    39,794.96x = 54,917.02 × 21,891.13
  4. Step 4: Simplify right side
    39,794.96x = 1,202,195,514.10
  5. Step 5: Solve for x
    x = 1,202,195,514.10/39,794.96
  6. Step 6: Final answer
    x = 30,209.74

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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.