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Finding the Fourth Proportional to 67,231.66, 100,848.06 and 19,200.15

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Solution

The fourth proportional to 67,231.66, 100,848.06 and 19,200.15 is: 28,800.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,231.66 : 100,848.06 = 19,200.15 : x
  2. Step 2: Convert to fraction form
    67,231.66/100,848.06 = 19,200.15/x
  3. Step 3: Cross multiply
    67,231.66x = 100,848.06 × 19,200.15
  4. Step 4: Simplify right side
    67,231.66x = 1,936,297,879.21
  5. Step 5: Solve for x
    x = 1,936,297,879.21/67,231.66
  6. Step 6: Final answer
    x = 28,800.39

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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.