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Finding the Fourth Proportional to 54,120.80, 81,142.80 and 24,552.80

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Solution

The fourth proportional to 54,120.80, 81,142.80 and 24,552.80 is: 36,811.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,120.80 : 81,142.80 = 24,552.80 : x
  2. Step 2: Convert to fraction form
    54,120.80/81,142.80 = 24,552.80/x
  3. Step 3: Cross multiply
    54,120.80x = 81,142.80 × 24,552.80
  4. Step 4: Simplify right side
    54,120.80x = 1,992,282,939.84
  5. Step 5: Solve for x
    x = 1,992,282,939.84/54,120.80
  6. Step 6: Final answer
    x = 36,811.78

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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.