Home / 80,542.36-120,849.56-41,078.68

Finding the Fourth Proportional to 80,542.36, 120,849.56 and 41,078.68

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Solution

The fourth proportional to 80,542.36, 120,849.56 and 41,078.68 is: 61,636.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,542.36 : 120,849.56 = 41,078.68 : x
  2. Step 2: Convert to fraction form
    80,542.36/120,849.56 = 41,078.68/x
  3. Step 3: Cross multiply
    80,542.36x = 120,849.56 × 41,078.68
  4. Step 4: Simplify right side
    80,542.36x = 4,964,340,403.38
  5. Step 5: Solve for x
    x = 4,964,340,403.38/80,542.36
  6. Step 6: Final answer
    x = 61,636.39

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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.