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Finding the Fourth Proportional to 80,800.50, 121,099.50 and 43,267.54

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Solution

The fourth proportional to 80,800.50, 121,099.50 and 43,267.54 is: 64,847.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,800.50 : 121,099.50 = 43,267.54 : x
  2. Step 2: Convert to fraction form
    80,800.50/121,099.50 = 43,267.54/x
  3. Step 3: Cross multiply
    80,800.50x = 121,099.50 × 43,267.54
  4. Step 4: Simplify right side
    80,800.50x = 5,239,677,460.23
  5. Step 5: Solve for x
    x = 5,239,677,460.23/80,800.50
  6. Step 6: Final answer
    x = 64,847.09

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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.