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Finding the Fourth Proportional to 54,021.20, 80,902.20 and 43,653.20

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Solution

The fourth proportional to 54,021.20, 80,902.20 and 43,653.20 is: 65,375.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,021.20 : 80,902.20 = 43,653.20 : x
  2. Step 2: Convert to fraction form
    54,021.20/80,902.20 = 43,653.20/x
  3. Step 3: Cross multiply
    54,021.20x = 80,902.20 × 43,653.20
  4. Step 4: Simplify right side
    54,021.20x = 3,531,639,917.04
  5. Step 5: Solve for x
    x = 3,531,639,917.04/54,021.20
  6. Step 6: Final answer
    x = 65,375.07

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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.