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Finding the Fourth Proportional to 73,415.33, 101,310.42 and 39,880.61

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Solution

The fourth proportional to 73,415.33, 101,310.42 and 39,880.61 is: 55,033.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,415.33 : 101,310.42 = 39,880.61 : x
  2. Step 2: Convert to fraction form
    73,415.33/101,310.42 = 39,880.61/x
  3. Step 3: Cross multiply
    73,415.33x = 101,310.42 × 39,880.61
  4. Step 4: Simplify right side
    73,415.33x = 4,040,321,348.96
  5. Step 5: Solve for x
    x = 4,040,321,348.96/73,415.33
  6. Step 6: Final answer
    x = 55,033.76

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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.