Home / 75,791.20-104,591.64-43,978.72

Finding the Fourth Proportional to 75,791.20, 104,591.64 and 43,978.72

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Solution

The fourth proportional to 75,791.20, 104,591.64 and 43,978.72 is: 60,690.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,791.20 : 104,591.64 = 43,978.72 : x
  2. Step 2: Convert to fraction form
    75,791.20/104,591.64 = 43,978.72/x
  3. Step 3: Cross multiply
    75,791.20x = 104,591.64 × 43,978.72
  4. Step 4: Simplify right side
    75,791.20x = 4,599,806,449.90
  5. Step 5: Solve for x
    x = 4,599,806,449.90/75,791.20
  6. Step 6: Final answer
    x = 60,690.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.