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Finding the Fourth Proportional to 75,105.60, 103,650.74 and 43,276.56

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Solution

The fourth proportional to 75,105.60, 103,650.74 and 43,276.56 is: 59,724.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,105.60 : 103,650.74 = 43,276.56 : x
  2. Step 2: Convert to fraction form
    75,105.60/103,650.74 = 43,276.56/x
  3. Step 3: Cross multiply
    75,105.60x = 103,650.74 × 43,276.56
  4. Step 4: Simplify right side
    75,105.60x = 4,485,647,468.65
  5. Step 5: Solve for x
    x = 4,485,647,468.65/75,105.60
  6. Step 6: Final answer
    x = 59,724.54

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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.