Home / 78,452.85-108,289.91-50,158.54

Finding the Fourth Proportional to 78,452.85, 108,289.91 and 50,158.54

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Solution

The fourth proportional to 78,452.85, 108,289.91 and 50,158.54 is: 69,234.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,452.85 : 108,289.91 = 50,158.54 : x
  2. Step 2: Convert to fraction form
    78,452.85/108,289.91 = 50,158.54/x
  3. Step 3: Cross multiply
    78,452.85x = 108,289.91 × 50,158.54
  4. Step 4: Simplify right side
    78,452.85x = 5,431,664,043.09
  5. Step 5: Solve for x
    x = 5,431,664,043.09/78,452.85
  6. Step 6: Final answer
    x = 69,234.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.