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Finding the Fourth Proportional to 66,842.92, 100,286.72 and 21,866.32

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Solution

The fourth proportional to 66,842.92, 100,286.72 and 21,866.32 is: 32,806.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,842.92 : 100,286.72 = 21,866.32 : x
  2. Step 2: Convert to fraction form
    66,842.92/100,286.72 = 21,866.32/x
  3. Step 3: Cross multiply
    66,842.92x = 100,286.72 × 21,866.32
  4. Step 4: Simplify right side
    66,842.92x = 2,192,901,732.29
  5. Step 5: Solve for x
    x = 2,192,901,732.29/66,842.92
  6. Step 6: Final answer
    x = 32,806.79

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1.5x scale

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.