Home / 80,564.09-120,919.97-43,166.39

Finding the Fourth Proportional to 80,564.09, 120,919.97 and 43,166.39

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Solution

The fourth proportional to 80,564.09, 120,919.97 and 43,166.39 is: 64,789.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,564.09 : 120,919.97 = 43,166.39 : x
  2. Step 2: Convert to fraction form
    80,564.09/120,919.97 = 43,166.39/x
  3. Step 3: Cross multiply
    80,564.09x = 120,919.97 × 43,166.39
  4. Step 4: Simplify right side
    80,564.09x = 5,219,678,087.12
  5. Step 5: Solve for x
    x = 5,219,678,087.12/80,564.09
  6. Step 6: Final answer
    x = 64,789.14

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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.