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Finding the Fourth Proportional to 67,235.92, 100,864.83 and 19,855.81

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Solution

The fourth proportional to 67,235.92, 100,864.83 and 19,855.81 is: 29,786.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,235.92 : 100,864.83 = 19,855.81 : x
  2. Step 2: Convert to fraction form
    67,235.92/100,864.83 = 19,855.81/x
  3. Step 3: Cross multiply
    67,235.92x = 100,864.83 × 19,855.81
  4. Step 4: Simplify right side
    67,235.92x = 2,002,752,346.20
  5. Step 5: Solve for x
    x = 2,002,752,346.20/67,235.92
  6. Step 6: Final answer
    x = 29,786.94

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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.