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Finding the Fourth Proportional to 69,817.91, 104,711.09 and 19,896.93

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Solution

The fourth proportional to 69,817.91, 104,711.09 and 19,896.93 is: 29,840.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,817.91 : 104,711.09 = 19,896.93 : x
  2. Step 2: Convert to fraction form
    69,817.91/104,711.09 = 19,896.93/x
  3. Step 3: Cross multiply
    69,817.91x = 104,711.09 × 19,896.93
  4. Step 4: Simplify right side
    69,817.91x = 2,083,429,128.47
  5. Step 5: Solve for x
    x = 2,083,429,128.47/69,817.91
  6. Step 6: Final answer
    x = 29,840.90

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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.