Home / 43,105.78-64,610.73-18,138.46

Finding the Fourth Proportional to 43,105.78, 64,610.73 and 18,138.46

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Solution

The fourth proportional to 43,105.78, 64,610.73 and 18,138.46 is: 27,187.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,105.78 : 64,610.73 = 18,138.46 : x
  2. Step 2: Convert to fraction form
    43,105.78/64,610.73 = 18,138.46/x
  3. Step 3: Cross multiply
    43,105.78x = 64,610.73 × 18,138.46
  4. Step 4: Simplify right side
    43,105.78x = 1,171,939,141.68
  5. Step 5: Solve for x
    x = 1,171,939,141.68/43,105.78
  6. Step 6: Final answer
    x = 27,187.52

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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.