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Finding the Fourth Proportional to 27,119.88, 40,680.53 and 8,651.88

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Solution

The fourth proportional to 27,119.88, 40,680.53 and 8,651.88 is: 12,978.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,119.88 : 40,680.53 = 8,651.88 : x
  2. Step 2: Convert to fraction form
    27,119.88/40,680.53 = 8,651.88/x
  3. Step 3: Cross multiply
    27,119.88x = 40,680.53 × 8,651.88
  4. Step 4: Simplify right side
    27,119.88x = 351,963,063.90
  5. Step 5: Solve for x
    x = 351,963,063.90/27,119.88
  6. Step 6: Final answer
    x = 12,978.05

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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.