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Finding the Fourth Proportional to 67,996.13, 101,997.83 and 21,252.65

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Solution

The fourth proportional to 67,996.13, 101,997.83 and 21,252.65 is: 31,880.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,996.13 : 101,997.83 = 21,252.65 : x
  2. Step 2: Convert to fraction form
    67,996.13/101,997.83 = 21,252.65/x
  3. Step 3: Cross multiply
    67,996.13x = 101,997.83 × 21,252.65
  4. Step 4: Simplify right side
    67,996.13x = 2,167,723,724.89
  5. Step 5: Solve for x
    x = 2,167,723,724.89/67,996.13
  6. Step 6: Final answer
    x = 31,880.11

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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.