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Finding the Fourth Proportional to 54,272.80, 81,409.20 and 36,558.10

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Solution

The fourth proportional to 54,272.80, 81,409.20 and 36,558.10 is: 54,837.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,272.80 : 81,409.20 = 36,558.10 : x
  2. Step 2: Convert to fraction form
    54,272.80/81,409.20 = 36,558.10/x
  3. Step 3: Cross multiply
    54,272.80x = 81,409.20 × 36,558.10
  4. Step 4: Simplify right side
    54,272.80x = 2,976,165,674.52
  5. Step 5: Solve for x
    x = 2,976,165,674.52/54,272.80
  6. Step 6: Final answer
    x = 54,837.15

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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.