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Finding the Fourth Proportional to 41,240.80, 61,861.20 and 30,743.20

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Solution

The fourth proportional to 41,240.80, 61,861.20 and 30,743.20 is: 46,114.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,240.80 : 61,861.20 = 30,743.20 : x
  2. Step 2: Convert to fraction form
    41,240.80/61,861.20 = 30,743.20/x
  3. Step 3: Cross multiply
    41,240.80x = 61,861.20 × 30,743.20
  4. Step 4: Simplify right side
    41,240.80x = 1,901,811,243.84
  5. Step 5: Solve for x
    x = 1,901,811,243.84/41,240.80
  6. Step 6: Final answer
    x = 46,114.80

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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.