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Finding the Fourth Proportional to 69,245.01, 103,852.60 and 21,863.79

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Solution

The fourth proportional to 69,245.01, 103,852.60 and 21,863.79 is: 32,790.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,245.01 : 103,852.60 = 21,863.79 : x
  2. Step 2: Convert to fraction form
    69,245.01/103,852.60 = 21,863.79/x
  3. Step 3: Cross multiply
    69,245.01x = 103,852.60 × 21,863.79
  4. Step 4: Simplify right side
    69,245.01x = 2,270,611,382.69
  5. Step 5: Solve for x
    x = 2,270,611,382.69/69,245.01
  6. Step 6: Final answer
    x = 32,790.97

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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.