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Finding the Fourth Proportional to 69,220.99, 103,855.56 and 21,843.37

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Solution

The fourth proportional to 69,220.99, 103,855.56 and 21,843.37 is: 32,772.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,220.99 : 103,855.56 = 21,843.37 : x
  2. Step 2: Convert to fraction form
    69,220.99/103,855.56 = 21,843.37/x
  3. Step 3: Cross multiply
    69,220.99x = 103,855.56 × 21,843.37
  4. Step 4: Simplify right side
    69,220.99x = 2,268,555,423.64
  5. Step 5: Solve for x
    x = 2,268,555,423.64/69,220.99
  6. Step 6: Final answer
    x = 32,772.65

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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.