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Finding the Fourth Proportional to 73,144.68, 100,939.12 and 41,319.80

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Solution

The fourth proportional to 73,144.68, 100,939.12 and 41,319.80 is: 57,021.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,144.68 : 100,939.12 = 41,319.80 : x
  2. Step 2: Convert to fraction form
    73,144.68/100,939.12 = 41,319.80/x
  3. Step 3: Cross multiply
    73,144.68x = 100,939.12 × 41,319.80
  4. Step 4: Simplify right side
    73,144.68x = 4,170,784,250.58
  5. Step 5: Solve for x
    x = 4,170,784,250.58/73,144.68
  6. Step 6: Final answer
    x = 57,021.02

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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.