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Finding the Fourth Proportional to 71,701.26, 98,950.44 and 39,872.44

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Solution

The fourth proportional to 71,701.26, 98,950.44 and 39,872.44 is: 55,025.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,701.26 : 98,950.44 = 39,872.44 : x
  2. Step 2: Convert to fraction form
    71,701.26/98,950.44 = 39,872.44/x
  3. Step 3: Cross multiply
    71,701.26x = 98,950.44 × 39,872.44
  4. Step 4: Simplify right side
    71,701.26x = 3,945,395,481.87
  5. Step 5: Solve for x
    x = 3,945,395,481.87/71,701.26
  6. Step 6: Final answer
    x = 55,025.47

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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.