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Finding the Fourth Proportional to 43,940.80, 65,911.20 and 41,003.20

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Solution

The fourth proportional to 43,940.80, 65,911.20 and 41,003.20 is: 61,504.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,940.80 : 65,911.20 = 41,003.20 : x
  2. Step 2: Convert to fraction form
    43,940.80/65,911.20 = 41,003.20/x
  3. Step 3: Cross multiply
    43,940.80x = 65,911.20 × 41,003.20
  4. Step 4: Simplify right side
    43,940.80x = 2,702,570,115.84
  5. Step 5: Solve for x
    x = 2,702,570,115.84/43,940.80
  6. Step 6: Final answer
    x = 61,504.80

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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.