Home / 43,086.78-64,631.25-11,922.30

Finding the Fourth Proportional to 43,086.78, 64,631.25 and 11,922.30

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Solution

The fourth proportional to 43,086.78, 64,631.25 and 11,922.30 is: 17,883.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,086.78 : 64,631.25 = 11,922.30 : x
  2. Step 2: Convert to fraction form
    43,086.78/64,631.25 = 11,922.30/x
  3. Step 3: Cross multiply
    43,086.78x = 64,631.25 × 11,922.30
  4. Step 4: Simplify right side
    43,086.78x = 770,553,151.88
  5. Step 5: Solve for x
    x = 770,553,151.88/43,086.78
  6. Step 6: Final answer
    x = 17,883.75

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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.