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Finding the Fourth Proportional to 69,986.57, 104,958.32 and 20,053.27

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Solution

The fourth proportional to 69,986.57, 104,958.32 and 20,053.27 is: 30,073.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,986.57 : 104,958.32 = 20,053.27 : x
  2. Step 2: Convert to fraction form
    69,986.57/104,958.32 = 20,053.27/x
  3. Step 3: Cross multiply
    69,986.57x = 104,958.32 × 20,053.27
  4. Step 4: Simplify right side
    69,986.57x = 2,104,757,560.64
  5. Step 5: Solve for x
    x = 2,104,757,560.64/69,986.57
  6. Step 6: Final answer
    x = 30,073.74

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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.