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Finding the Fourth Proportional to 71,568.44, 107,211.90 and 35,986.78

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Solution

The fourth proportional to 71,568.44, 107,211.90 and 35,986.78 is: 53,909.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,568.44 : 107,211.90 = 35,986.78 : x
  2. Step 2: Convert to fraction form
    71,568.44/107,211.90 = 35,986.78/x
  3. Step 3: Cross multiply
    71,568.44x = 107,211.90 × 35,986.78
  4. Step 4: Simplify right side
    71,568.44x = 3,858,211,327.65
  5. Step 5: Solve for x
    x = 3,858,211,327.65/71,568.44
  6. Step 6: Final answer
    x = 53,909.40

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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.