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Finding the Fourth Proportional to 69,409.52, 104,172.60 and 29,996.72

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Solution

The fourth proportional to 69,409.52, 104,172.60 and 29,996.72 is: 45,020.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,409.52 : 104,172.60 = 29,996.72 : x
  2. Step 2: Convert to fraction form
    69,409.52/104,172.60 = 29,996.72/x
  3. Step 3: Cross multiply
    69,409.52x = 104,172.60 × 29,996.72
  4. Step 4: Simplify right side
    69,409.52x = 3,124,836,313.87
  5. Step 5: Solve for x
    x = 3,124,836,313.87/69,409.52
  6. Step 6: Final answer
    x = 45,020.28

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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.