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Finding the Fourth Proportional to 100,442.66, 150,659.66 and 30,319.88

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Solution

The fourth proportional to 100,442.66, 150,659.66 and 30,319.88 is: 45,478.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,442.66 : 150,659.66 = 30,319.88 : x
  2. Step 2: Convert to fraction form
    100,442.66/150,659.66 = 30,319.88/x
  3. Step 3: Cross multiply
    100,442.66x = 150,659.66 × 30,319.88
  4. Step 4: Simplify right side
    100,442.66x = 4,567,981,907.14
  5. Step 5: Solve for x
    x = 4,567,981,907.14/100,442.66
  6. Step 6: Final answer
    x = 45,478.51

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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.