Home / 54,475.72-81,692.52-21,191.29

Finding the Fourth Proportional to 54,475.72, 81,692.52 and 21,191.29

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Solution

The fourth proportional to 54,475.72, 81,692.52 and 21,191.29 is: 31,778.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,475.72 : 81,692.52 = 21,191.29 : x
  2. Step 2: Convert to fraction form
    54,475.72/81,692.52 = 21,191.29/x
  3. Step 3: Cross multiply
    54,475.72x = 81,692.52 × 21,191.29
  4. Step 4: Simplify right side
    54,475.72x = 1,731,169,882.15
  5. Step 5: Solve for x
    x = 1,731,169,882.15/54,475.72
  6. Step 6: Final answer
    x = 31,778.74

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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.