Home / 71,079.11-106,616.61-18,488.59

Finding the Fourth Proportional to 71,079.11, 106,616.61 and 18,488.59

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Solution

The fourth proportional to 71,079.11, 106,616.61 and 18,488.59 is: 27,732.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,079.11 : 106,616.61 = 18,488.59 : x
  2. Step 2: Convert to fraction form
    71,079.11/106,616.61 = 18,488.59/x
  3. Step 3: Cross multiply
    71,079.11x = 106,616.61 × 18,488.59
  4. Step 4: Simplify right side
    71,079.11x = 1,971,190,789.48
  5. Step 5: Solve for x
    x = 1,971,190,789.48/71,079.11
  6. Step 6: Final answer
    x = 27,732.35

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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.