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Finding the Fourth Proportional to 69,974.52, 104,944.08 and 20,055

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Solution

The fourth proportional to 69,974.52, 104,944.08 and 20,055 is: 30,077.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,974.52 : 104,944.08 = 20,055 : x
  2. Step 2: Convert to fraction form
    69,974.52/104,944.08 = 20,055/x
  3. Step 3: Cross multiply
    69,974.52x = 104,944.08 × 20,055
  4. Step 4: Simplify right side
    69,974.52x = 2,104,653,524.40
  5. Step 5: Solve for x
    x = 2,104,653,524.40/69,974.52
  6. Step 6: Final answer
    x = 30,077.43

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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.