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Finding the Fourth Proportional to 29,179.99, 43,766.34 and 8,121.61

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Solution

The fourth proportional to 29,179.99, 43,766.34 and 8,121.61 is: 12,181.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,179.99 : 43,766.34 = 8,121.61 : x
  2. Step 2: Convert to fraction form
    29,179.99/43,766.34 = 8,121.61/x
  3. Step 3: Cross multiply
    29,179.99x = 43,766.34 × 8,121.61
  4. Step 4: Simplify right side
    29,179.99x = 355,453,144.61
  5. Step 5: Solve for x
    x = 355,453,144.61/29,179.99
  6. Step 6: Final answer
    x = 12,181.40

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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.