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Finding the Fourth Proportional to 66,289.75, 91,479.87 and 36,481.75

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Solution

The fourth proportional to 66,289.75, 91,479.87 and 36,481.75 is: 50,344.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,289.75 : 91,479.87 = 36,481.75 : x
  2. Step 2: Convert to fraction form
    66,289.75/91,479.87 = 36,481.75/x
  3. Step 3: Cross multiply
    66,289.75x = 91,479.87 × 36,481.75
  4. Step 4: Simplify right side
    66,289.75x = 3,337,345,747.37
  5. Step 5: Solve for x
    x = 3,337,345,747.37/66,289.75
  6. Step 6: Final answer
    x = 50,344.82

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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.