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Finding the Fourth Proportional to 80,140.23, 110,627.54 and 49,940.46

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Solution

The fourth proportional to 80,140.23, 110,627.54 and 49,940.46 is: 68,939.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,140.23 : 110,627.54 = 49,940.46 : x
  2. Step 2: Convert to fraction form
    80,140.23/110,627.54 = 49,940.46/x
  3. Step 3: Cross multiply
    80,140.23x = 110,627.54 × 49,940.46
  4. Step 4: Simplify right side
    80,140.23x = 5,524,790,236.27
  5. Step 5: Solve for x
    x = 5,524,790,236.27/80,140.23
  6. Step 6: Final answer
    x = 68,939.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.