Home / 76,679.16-115,042.26-39,265.52

Finding the Fourth Proportional to 76,679.16, 115,042.26 and 39,265.52

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Solution

The fourth proportional to 76,679.16, 115,042.26 and 39,265.52 is: 58,910.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,679.16 : 115,042.26 = 39,265.52 : x
  2. Step 2: Convert to fraction form
    76,679.16/115,042.26 = 39,265.52/x
  3. Step 3: Cross multiply
    76,679.16x = 115,042.26 × 39,265.52
  4. Step 4: Simplify right side
    76,679.16x = 4,517,194,160.88
  5. Step 5: Solve for x
    x = 4,517,194,160.88/76,679.16
  6. Step 6: Final answer
    x = 58,910.32

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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.