Home / 57,942.38-86,920.86-20,493.65

Finding the Fourth Proportional to 57,942.38, 86,920.86 and 20,493.65

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Solution

The fourth proportional to 57,942.38, 86,920.86 and 20,493.65 is: 30,743.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,942.38 : 86,920.86 = 20,493.65 : x
  2. Step 2: Convert to fraction form
    57,942.38/86,920.86 = 20,493.65/x
  3. Step 3: Cross multiply
    57,942.38x = 86,920.86 × 20,493.65
  4. Step 4: Simplify right side
    57,942.38x = 1,781,325,682.54
  5. Step 5: Solve for x
    x = 1,781,325,682.54/57,942.38
  6. Step 6: Final answer
    x = 30,743.05

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1.5x scale

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.