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Finding the Fourth Proportional to 71,377.71, 107,058.29 and 18,791.30

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Solution

The fourth proportional to 71,377.71, 107,058.29 and 18,791.30 is: 28,184.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,377.71 : 107,058.29 = 18,791.30 : x
  2. Step 2: Convert to fraction form
    71,377.71/107,058.29 = 18,791.30/x
  3. Step 3: Cross multiply
    71,377.71x = 107,058.29 × 18,791.30
  4. Step 4: Simplify right side
    71,377.71x = 2,011,763,815.63
  5. Step 5: Solve for x
    x = 2,011,763,815.63/71,377.71
  6. Step 6: Final answer
    x = 28,184.76

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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.