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Finding the Fourth Proportional to 54,209.60, 81,249.60 and 27,900.80

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Solution

The fourth proportional to 54,209.60, 81,249.60 and 27,900.80 is: 41,817.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,209.60 : 81,249.60 = 27,900.80 : x
  2. Step 2: Convert to fraction form
    54,209.60/81,249.60 = 27,900.80/x
  3. Step 3: Cross multiply
    54,209.60x = 81,249.60 × 27,900.80
  4. Step 4: Simplify right side
    54,209.60x = 2,266,928,839.68
  5. Step 5: Solve for x
    x = 2,266,928,839.68/54,209.60
  6. Step 6: Final answer
    x = 41,817.85

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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.