Home / 76,813.20-115,149.60-65,042.76

Finding the Fourth Proportional to 76,813.20, 115,149.60 and 65,042.76

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Solution

The fourth proportional to 76,813.20, 115,149.60 and 65,042.76 is: 97,504.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,813.20 : 115,149.60 = 65,042.76 : x
  2. Step 2: Convert to fraction form
    76,813.20/115,149.60 = 65,042.76/x
  3. Step 3: Cross multiply
    76,813.20x = 115,149.60 × 65,042.76
  4. Step 4: Simplify right side
    76,813.20x = 7,489,647,796.90
  5. Step 5: Solve for x
    x = 7,489,647,796.90/76,813.20
  6. Step 6: Final answer
    x = 97,504.70

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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.