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Finding the Fourth Proportional to 69,577.81, 104,371.04 and 19,661.73

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Solution

The fourth proportional to 69,577.81, 104,371.04 and 19,661.73 is: 29,493.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,577.81 : 104,371.04 = 19,661.73 : x
  2. Step 2: Convert to fraction form
    69,577.81/104,371.04 = 19,661.73/x
  3. Step 3: Cross multiply
    69,577.81x = 104,371.04 × 19,661.73
  4. Step 4: Simplify right side
    69,577.81x = 2,052,115,208.30
  5. Step 5: Solve for x
    x = 2,052,115,208.30/69,577.81
  6. Step 6: Final answer
    x = 29,493.82

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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.