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Finding the Fourth Proportional to 69,709.08, 104,563.41 and 19,789.22

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Solution

The fourth proportional to 69,709.08, 104,563.41 and 19,789.22 is: 29,683.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,709.08 : 104,563.41 = 19,789.22 : x
  2. Step 2: Convert to fraction form
    69,709.08/104,563.41 = 19,789.22/x
  3. Step 3: Cross multiply
    69,709.08x = 104,563.41 × 19,789.22
  4. Step 4: Simplify right side
    69,709.08x = 2,069,228,324.44
  5. Step 5: Solve for x
    x = 2,069,228,324.44/69,709.08
  6. Step 6: Final answer
    x = 29,683.77

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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.