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Finding the Fourth Proportional to 69,440, 104,177.64 and 20,192

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Solution

The fourth proportional to 69,440, 104,177.64 and 20,192 is: 30,293.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,440 : 104,177.64 = 20,192 : x
  2. Step 2: Convert to fraction form
    69,440/104,177.64 = 20,192/x
  3. Step 3: Cross multiply
    69,440x = 104,177.64 × 20,192
  4. Step 4: Simplify right side
    69,440x = 2,103,554,906.88
  5. Step 5: Solve for x
    x = 2,103,554,906.88/69,440
  6. Step 6: Final answer
    x = 30,293.13

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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.