Home / 43,105.14-64,662.21-11,940.39

Finding the Fourth Proportional to 43,105.14, 64,662.21 and 11,940.39

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Solution

The fourth proportional to 43,105.14, 64,662.21 and 11,940.39 is: 17,911.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,105.14 : 64,662.21 = 11,940.39 : x
  2. Step 2: Convert to fraction form
    43,105.14/64,662.21 = 11,940.39/x
  3. Step 3: Cross multiply
    43,105.14x = 64,662.21 × 11,940.39
  4. Step 4: Simplify right side
    43,105.14x = 772,092,005.66
  5. Step 5: Solve for x
    x = 772,092,005.66/43,105.14
  6. Step 6: Final answer
    x = 17,911.83

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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.