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Finding the Fourth Proportional to 79,383.97, 119,013.81 and 54,348.31

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Solution

The fourth proportional to 79,383.97, 119,013.81 and 54,348.31 is: 81,479.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,383.97 : 119,013.81 = 54,348.31 : x
  2. Step 2: Convert to fraction form
    79,383.97/119,013.81 = 54,348.31/x
  3. Step 3: Cross multiply
    79,383.97x = 119,013.81 × 54,348.31
  4. Step 4: Simplify right side
    79,383.97x = 6,468,199,440.16
  5. Step 5: Solve for x
    x = 6,468,199,440.16/79,383.97
  6. Step 6: Final answer
    x = 81,479.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.