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Finding the Fourth Proportional to 69,942.85, 104,945.28 and 36,655

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Solution

The fourth proportional to 69,942.85, 104,945.28 and 36,655 is: 54,998.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,942.85 : 104,945.28 = 36,655 : x
  2. Step 2: Convert to fraction form
    69,942.85/104,945.28 = 36,655/x
  3. Step 3: Cross multiply
    69,942.85x = 104,945.28 × 36,655
  4. Step 4: Simplify right side
    69,942.85x = 3,846,769,238.40
  5. Step 5: Solve for x
    x = 3,846,769,238.40/69,942.85
  6. Step 6: Final answer
    x = 54,998.75

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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.