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Finding the Fourth Proportional to 100,571.97, 150,910.20 and 40,615.20

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Solution

The fourth proportional to 100,571.97, 150,910.20 and 40,615.20 is: 60,943.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,571.97 : 150,910.20 = 40,615.20 : x
  2. Step 2: Convert to fraction form
    100,571.97/150,910.20 = 40,615.20/x
  3. Step 3: Cross multiply
    100,571.97x = 150,910.20 × 40,615.20
  4. Step 4: Simplify right side
    100,571.97x = 6,129,247,955.04
  5. Step 5: Solve for x
    x = 6,129,247,955.04/100,571.97
  6. Step 6: Final answer
    x = 60,943.90

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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.