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Finding the Fourth Proportional to 70,940.40, 106,410.60 and 41,391.60

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Solution

The fourth proportional to 70,940.40, 106,410.60 and 41,391.60 is: 62,087.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,940.40 : 106,410.60 = 41,391.60 : x
  2. Step 2: Convert to fraction form
    70,940.40/106,410.60 = 41,391.60/x
  3. Step 3: Cross multiply
    70,940.40x = 106,410.60 × 41,391.60
  4. Step 4: Simplify right side
    70,940.40x = 4,404,504,990.96
  5. Step 5: Solve for x
    x = 4,404,504,990.96/70,940.40
  6. Step 6: Final answer
    x = 62,087.40

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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.