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Finding the Fourth Proportional to 71,876.88, 107,819.37 and 21,964.68

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Solution

The fourth proportional to 71,876.88, 107,819.37 and 21,964.68 is: 32,948.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,876.88 : 107,819.37 = 21,964.68 : x
  2. Step 2: Convert to fraction form
    71,876.88/107,819.37 = 21,964.68/x
  3. Step 3: Cross multiply
    71,876.88x = 107,819.37 × 21,964.68
  4. Step 4: Simplify right side
    71,876.88x = 2,368,217,959.85
  5. Step 5: Solve for x
    x = 2,368,217,959.85/71,876.88
  6. Step 6: Final answer
    x = 32,948.26

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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.