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Finding the Fourth Proportional to 43,880.80, 65,821.20 and 40,943.20

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Solution

The fourth proportional to 43,880.80, 65,821.20 and 40,943.20 is: 61,414.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,880.80 : 65,821.20 = 40,943.20 : x
  2. Step 2: Convert to fraction form
    43,880.80/65,821.20 = 40,943.20/x
  3. Step 3: Cross multiply
    43,880.80x = 65,821.20 × 40,943.20
  4. Step 4: Simplify right side
    43,880.80x = 2,694,930,555.84
  5. Step 5: Solve for x
    x = 2,694,930,555.84/43,880.80
  6. Step 6: Final answer
    x = 61,414.80

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Similar ratio
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1.5x scale

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.