Home / 86,517.40-129,751.80-27,371.20

Finding the Fourth Proportional to 86,517.40, 129,751.80 and 27,371.20

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Solution

The fourth proportional to 86,517.40, 129,751.80 and 27,371.20 is: 41,049.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,517.40 : 129,751.80 = 27,371.20 : x
  2. Step 2: Convert to fraction form
    86,517.40/129,751.80 = 27,371.20/x
  3. Step 3: Cross multiply
    86,517.40x = 129,751.80 × 27,371.20
  4. Step 4: Simplify right side
    86,517.40x = 3,551,462,468.16
  5. Step 5: Solve for x
    x = 3,551,462,468.16/86,517.40
  6. Step 6: Final answer
    x = 41,049.11

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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.