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Finding the Fourth Proportional to 100,375.21, 150,571 and 50,429.53

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Solution

The fourth proportional to 100,375.21, 150,571 and 50,429.53 is: 75,648.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,375.21 : 150,571 = 50,429.53 : x
  2. Step 2: Convert to fraction form
    100,375.21/150,571 = 50,429.53/x
  3. Step 3: Cross multiply
    100,375.21x = 150,571 × 50,429.53
  4. Step 4: Simplify right side
    100,375.21x = 7,593,224,008.78
  5. Step 5: Solve for x
    x = 7,593,224,008.78/100,375.21
  6. Step 6: Final answer
    x = 75,648.40

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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.