Home / 43,179.72-64,725.82-20,974.38

Finding the Fourth Proportional to 43,179.72, 64,725.82 and 20,974.38

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Solution

The fourth proportional to 43,179.72, 64,725.82 and 20,974.38 is: 31,440.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,179.72 : 64,725.82 = 20,974.38 : x
  2. Step 2: Convert to fraction form
    43,179.72/64,725.82 = 20,974.38/x
  3. Step 3: Cross multiply
    43,179.72x = 64,725.82 × 20,974.38
  4. Step 4: Simplify right side
    43,179.72x = 1,357,583,944.49
  5. Step 5: Solve for x
    x = 1,357,583,944.49/43,179.72
  6. Step 6: Final answer
    x = 31,440.31

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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.