Home / 76,976.88-115,481.54-28,945.79

Finding the Fourth Proportional to 76,976.88, 115,481.54 and 28,945.79

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Solution

The fourth proportional to 76,976.88, 115,481.54 and 28,945.79 is: 43,424.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,976.88 : 115,481.54 = 28,945.79 : x
  2. Step 2: Convert to fraction form
    76,976.88/115,481.54 = 28,945.79/x
  3. Step 3: Cross multiply
    76,976.88x = 115,481.54 × 28,945.79
  4. Step 4: Simplify right side
    76,976.88x = 3,342,704,405.72
  5. Step 5: Solve for x
    x = 3,342,704,405.72/76,976.88
  6. Step 6: Final answer
    x = 43,424.78

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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.