Home / 57,791.06-86,711.64-20,377.86

Finding the Fourth Proportional to 57,791.06, 86,711.64 and 20,377.86

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Solution

The fourth proportional to 57,791.06, 86,711.64 and 20,377.86 is: 30,575.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,791.06 : 86,711.64 = 20,377.86 : x
  2. Step 2: Convert to fraction form
    57,791.06/86,711.64 = 20,377.86/x
  3. Step 3: Cross multiply
    57,791.06x = 86,711.64 × 20,377.86
  4. Step 4: Simplify right side
    57,791.06x = 1,766,997,660.29
  5. Step 5: Solve for x
    x = 1,766,997,660.29/57,791.06
  6. Step 6: Final answer
    x = 30,575.62

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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.