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Finding the Fourth Proportional to 67,243.10, 100,841.10 and 19,845.60

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Solution

The fourth proportional to 67,243.10, 100,841.10 and 19,845.60 is: 29,761.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,243.10 : 100,841.10 = 19,845.60 : x
  2. Step 2: Convert to fraction form
    67,243.10/100,841.10 = 19,845.60/x
  3. Step 3: Cross multiply
    67,243.10x = 100,841.10 × 19,845.60
  4. Step 4: Simplify right side
    67,243.10x = 2,001,252,134.16
  5. Step 5: Solve for x
    x = 2,001,252,134.16/67,243.10
  6. Step 6: Final answer
    x = 29,761.45

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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.