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Finding the Fourth Proportional to 71,326.98, 98,431.22 and 39,495.87

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Solution

The fourth proportional to 71,326.98, 98,431.22 and 39,495.87 is: 54,504.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,326.98 : 98,431.22 = 39,495.87 : x
  2. Step 2: Convert to fraction form
    71,326.98/98,431.22 = 39,495.87/x
  3. Step 3: Cross multiply
    71,326.98x = 98,431.22 × 39,495.87
  4. Step 4: Simplify right side
    71,326.98x = 3,887,626,471.58
  5. Step 5: Solve for x
    x = 3,887,626,471.58/71,326.98
  6. Step 6: Final answer
    x = 54,504.29

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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.