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Finding the Fourth Proportional to 71,832.67, 107,748.92 and 19,240.72

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Solution

The fourth proportional to 71,832.67, 107,748.92 and 19,240.72 is: 28,861.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,832.67 : 107,748.92 = 19,240.72 : x
  2. Step 2: Convert to fraction form
    71,832.67/107,748.92 = 19,240.72/x
  3. Step 3: Cross multiply
    71,832.67x = 107,748.92 × 19,240.72
  4. Step 4: Simplify right side
    71,832.67x = 2,073,166,800.02
  5. Step 5: Solve for x
    x = 2,073,166,800.02/71,832.67
  6. Step 6: Final answer
    x = 28,861.06

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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.