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Finding the Fourth Proportional to 54,578.37, 81,891.87 and 53,692.65

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Solution

The fourth proportional to 54,578.37, 81,891.87 and 53,692.65 is: 80,562.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,578.37 : 81,891.87 = 53,692.65 : x
  2. Step 2: Convert to fraction form
    54,578.37/81,891.87 = 53,692.65/x
  3. Step 3: Cross multiply
    54,578.37x = 81,891.87 × 53,692.65
  4. Step 4: Simplify right side
    54,578.37x = 4,396,991,513.76
  5. Step 5: Solve for x
    x = 4,396,991,513.76/54,578.37
  6. Step 6: Final answer
    x = 80,562.90

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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.