Home / 43,072.40-64,609.82-11,907.65

Finding the Fourth Proportional to 43,072.40, 64,609.82 and 11,907.65

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Solution

The fourth proportional to 43,072.40, 64,609.82 and 11,907.65 is: 17,861.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,072.40 : 64,609.82 = 11,907.65 : x
  2. Step 2: Convert to fraction form
    43,072.40/64,609.82 = 11,907.65/x
  3. Step 3: Cross multiply
    43,072.40x = 64,609.82 × 11,907.65
  4. Step 4: Simplify right side
    43,072.40x = 769,351,269.76
  5. Step 5: Solve for x
    x = 769,351,269.76/43,072.40
  6. Step 6: Final answer
    x = 17,861.81

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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.