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Finding the Fourth Proportional to 100,419.62, 150,630.52 and 30,299.54

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Solution

The fourth proportional to 100,419.62, 150,630.52 and 30,299.54 is: 45,449.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,419.62 : 150,630.52 = 30,299.54 : x
  2. Step 2: Convert to fraction form
    100,419.62/150,630.52 = 30,299.54/x
  3. Step 3: Cross multiply
    100,419.62x = 150,630.52 × 30,299.54
  4. Step 4: Simplify right side
    100,419.62x = 4,564,035,465.96
  5. Step 5: Solve for x
    x = 4,564,035,465.96/100,419.62
  6. Step 6: Final answer
    x = 45,449.64

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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.