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Finding the Fourth Proportional to 86,414.88, 129,645 and 27,252.48

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Solution

The fourth proportional to 86,414.88, 129,645 and 27,252.48 is: 40,885.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,414.88 : 129,645 = 27,252.48 : x
  2. Step 2: Convert to fraction form
    86,414.88/129,645 = 27,252.48/x
  3. Step 3: Cross multiply
    86,414.88x = 129,645 × 27,252.48
  4. Step 4: Simplify right side
    86,414.88x = 3,533,147,769.60
  5. Step 5: Solve for x
    x = 3,533,147,769.60/86,414.88
  6. Step 6: Final answer
    x = 40,885.87

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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.