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Finding the Fourth Proportional to 79,905.60, 119,815.20 and 33,163.20

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Solution

The fourth proportional to 79,905.60, 119,815.20 and 33,163.20 is: 49,726.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,905.60 : 119,815.20 = 33,163.20 : x
  2. Step 2: Convert to fraction form
    79,905.60/119,815.20 = 33,163.20/x
  3. Step 3: Cross multiply
    79,905.60x = 119,815.20 × 33,163.20
  4. Step 4: Simplify right side
    79,905.60x = 3,973,455,440.64
  5. Step 5: Solve for x
    x = 3,973,455,440.64/79,905.60
  6. Step 6: Final answer
    x = 49,726.87

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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.