Home / 71,704.08-98,951.70-39,872.30

Finding the Fourth Proportional to 71,704.08, 98,951.70 and 39,872.30

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Solution

The fourth proportional to 71,704.08, 98,951.70 and 39,872.30 is: 55,023.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,704.08 : 98,951.70 = 39,872.30 : x
  2. Step 2: Convert to fraction form
    71,704.08/98,951.70 = 39,872.30/x
  3. Step 3: Cross multiply
    71,704.08x = 98,951.70 × 39,872.30
  4. Step 4: Simplify right side
    71,704.08x = 3,945,431,373.15
  5. Step 5: Solve for x
    x = 3,945,431,373.15/71,704.08
  6. Step 6: Final answer
    x = 55,023.81

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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.