Home / 76,974.88-115,478.54-28,943.79

Finding the Fourth Proportional to 76,974.88, 115,478.54 and 28,943.79

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Solution

The fourth proportional to 76,974.88, 115,478.54 and 28,943.79 is: 43,421.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,974.88 : 115,478.54 = 28,943.79 : x
  2. Step 2: Convert to fraction form
    76,974.88/115,478.54 = 28,943.79/x
  3. Step 3: Cross multiply
    76,974.88x = 115,478.54 × 28,943.79
  4. Step 4: Simplify right side
    76,974.88x = 3,342,386,611.27
  5. Step 5: Solve for x
    x = 3,342,386,611.27/76,974.88
  6. Step 6: Final answer
    x = 43,421.78

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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.