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Finding the Fourth Proportional to 85,488.84, 117,897.84 and 71,195.88

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Solution

The fourth proportional to 85,488.84, 117,897.84 and 71,195.88 is: 98,186.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,488.84 : 117,897.84 = 71,195.88 : x
  2. Step 2: Convert to fraction form
    85,488.84/117,897.84 = 71,195.88/x
  3. Step 3: Cross multiply
    85,488.84x = 117,897.84 × 71,195.88
  4. Step 4: Simplify right side
    85,488.84x = 8,393,840,468.90
  5. Step 5: Solve for x
    x = 8,393,840,468.90/85,488.84
  6. Step 6: Final answer
    x = 98,186.39

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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.