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Finding the Fourth Proportional to 71,131.92, 106,660.80 and 35,554.56

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Solution

The fourth proportional to 71,131.92, 106,660.80 and 35,554.56 is: 53,313.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,131.92 : 106,660.80 = 35,554.56 : x
  2. Step 2: Convert to fraction form
    71,131.92/106,660.80 = 35,554.56/x
  3. Step 3: Cross multiply
    71,131.92x = 106,660.80 × 35,554.56
  4. Step 4: Simplify right side
    71,131.92x = 3,792,277,813.25
  5. Step 5: Solve for x
    x = 3,792,277,813.25/71,131.92
  6. Step 6: Final answer
    x = 53,313.31

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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.