Home / 76,928.86-115,327.05-30,170.62

Finding the Fourth Proportional to 76,928.86, 115,327.05 and 30,170.62

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Solution

The fourth proportional to 76,928.86, 115,327.05 and 30,170.62 is: 45,229.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,928.86 : 115,327.05 = 30,170.62 : x
  2. Step 2: Convert to fraction form
    76,928.86/115,327.05 = 30,170.62/x
  3. Step 3: Cross multiply
    76,928.86x = 115,327.05 × 30,170.62
  4. Step 4: Simplify right side
    76,928.86x = 3,479,488,601.27
  5. Step 5: Solve for x
    x = 3,479,488,601.27/76,928.86
  6. Step 6: Final answer
    x = 45,229.95

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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.