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Finding the Fourth Proportional to 67,236.92, 100,866.33 and 19,856.81

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Solution

The fourth proportional to 67,236.92, 100,866.33 and 19,856.81 is: 29,788.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,236.92 : 100,866.33 = 19,856.81 : x
  2. Step 2: Convert to fraction form
    67,236.92/100,866.33 = 19,856.81/x
  3. Step 3: Cross multiply
    67,236.92x = 100,866.33 × 19,856.81
  4. Step 4: Simplify right side
    67,236.92x = 2,002,883,550.21
  5. Step 5: Solve for x
    x = 2,002,883,550.21/67,236.92
  6. Step 6: Final answer
    x = 29,788.45

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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.