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Finding the Fourth Proportional to 57,951.26, 86,933.78 and 20,503.62

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Solution

The fourth proportional to 57,951.26, 86,933.78 and 20,503.62 is: 30,757.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,951.26 : 86,933.78 = 20,503.62 : x
  2. Step 2: Convert to fraction form
    57,951.26/86,933.78 = 20,503.62/x
  3. Step 3: Cross multiply
    57,951.26x = 86,933.78 × 20,503.62
  4. Step 4: Simplify right side
    57,951.26x = 1,782,457,190.28
  5. Step 5: Solve for x
    x = 1,782,457,190.28/57,951.26
  6. Step 6: Final answer
    x = 30,757.87

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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.