Home / 86,479.20-129,732.30-27,309.24

Finding the Fourth Proportional to 86,479.20, 129,732.30 and 27,309.24

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Solution

The fourth proportional to 86,479.20, 129,732.30 and 27,309.24 is: 40,968.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,479.20 : 129,732.30 = 27,309.24 : x
  2. Step 2: Convert to fraction form
    86,479.20/129,732.30 = 27,309.24/x
  3. Step 3: Cross multiply
    86,479.20x = 129,732.30 × 27,309.24
  4. Step 4: Simplify right side
    86,479.20x = 3,542,890,516.45
  5. Step 5: Solve for x
    x = 3,542,890,516.45/86,479.20
  6. Step 6: Final answer
    x = 40,968.12

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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.