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Finding the Fourth Proportional to 54,537.80, 81,806.70 and 41,318.60

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Solution

The fourth proportional to 54,537.80, 81,806.70 and 41,318.60 is: 61,977.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,537.80 : 81,806.70 = 41,318.60 : x
  2. Step 2: Convert to fraction form
    54,537.80/81,806.70 = 41,318.60/x
  3. Step 3: Cross multiply
    54,537.80x = 81,806.70 × 41,318.60
  4. Step 4: Simplify right side
    54,537.80x = 3,380,138,314.62
  5. Step 5: Solve for x
    x = 3,380,138,314.62/54,537.80
  6. Step 6: Final answer
    x = 61,977.90

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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.