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Finding the Fourth Proportional to 71,896.03, 99,217.24 and 39,631.79

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Solution

The fourth proportional to 71,896.03, 99,217.24 and 39,631.79 is: 54,692.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,896.03 : 99,217.24 = 39,631.79 : x
  2. Step 2: Convert to fraction form
    71,896.03/99,217.24 = 39,631.79/x
  3. Step 3: Cross multiply
    71,896.03x = 99,217.24 × 39,631.79
  4. Step 4: Simplify right side
    71,896.03x = 3,932,156,969.02
  5. Step 5: Solve for x
    x = 3,932,156,969.02/71,896.03
  6. Step 6: Final answer
    x = 54,692.27

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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.