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Finding the Fourth Proportional to 67,245.30, 100,881.24 and 19,861.22

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Solution

The fourth proportional to 67,245.30, 100,881.24 and 19,861.22 is: 29,795.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,245.30 : 100,881.24 = 19,861.22 : x
  2. Step 2: Convert to fraction form
    67,245.30/100,881.24 = 19,861.22/x
  3. Step 3: Cross multiply
    67,245.30x = 100,881.24 × 19,861.22
  4. Step 4: Simplify right side
    67,245.30x = 2,003,623,997.11
  5. Step 5: Solve for x
    x = 2,003,623,997.11/67,245.30
  6. Step 6: Final answer
    x = 29,795.75

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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.