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Finding the Fourth Proportional to 69,579.81, 104,374.04 and 19,663.73

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Solution

The fourth proportional to 69,579.81, 104,374.04 and 19,663.73 is: 29,496.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,579.81 : 104,374.04 = 19,663.73 : x
  2. Step 2: Convert to fraction form
    69,579.81/104,374.04 = 19,663.73/x
  3. Step 3: Cross multiply
    69,579.81x = 104,374.04 × 19,663.73
  4. Step 4: Simplify right side
    69,579.81x = 2,052,382,321.38
  5. Step 5: Solve for x
    x = 2,052,382,321.38/69,579.81
  6. Step 6: Final answer
    x = 29,496.81

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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.