Home / 57,781.80-86,675.18-18,340.52

Finding the Fourth Proportional to 57,781.80, 86,675.18 and 18,340.52

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Solution

The fourth proportional to 57,781.80, 86,675.18 and 18,340.52 is: 27,511.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,781.80 : 86,675.18 = 18,340.52 : x
  2. Step 2: Convert to fraction form
    57,781.80/86,675.18 = 18,340.52/x
  3. Step 3: Cross multiply
    57,781.80x = 86,675.18 × 18,340.52
  4. Step 4: Simplify right side
    57,781.80x = 1,589,667,872.29
  5. Step 5: Solve for x
    x = 1,589,667,872.29/57,781.80
  6. Step 6: Final answer
    x = 27,511.57

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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.