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Finding the Fourth Proportional to 57,479.42, 86,191.74 and 20,034.92

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Solution

The fourth proportional to 57,479.42, 86,191.74 and 20,034.92 is: 30,042.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,479.42 : 86,191.74 = 20,034.92 : x
  2. Step 2: Convert to fraction form
    57,479.42/86,191.74 = 20,034.92/x
  3. Step 3: Cross multiply
    57,479.42x = 86,191.74 × 20,034.92
  4. Step 4: Simplify right side
    57,479.42x = 1,726,844,615.56
  5. Step 5: Solve for x
    x = 1,726,844,615.56/57,479.42
  6. Step 6: Final answer
    x = 30,042.83

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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.