Home / 53,436.70-80,144.11-18,379.09

Finding the Fourth Proportional to 53,436.70, 80,144.11 and 18,379.09

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Solution

The fourth proportional to 53,436.70, 80,144.11 and 18,379.09 is: 27,564.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,436.70 : 80,144.11 = 18,379.09 : x
  2. Step 2: Convert to fraction form
    53,436.70/80,144.11 = 18,379.09/x
  3. Step 3: Cross multiply
    53,436.70x = 80,144.11 × 18,379.09
  4. Step 4: Simplify right side
    53,436.70x = 1,472,975,810.66
  5. Step 5: Solve for x
    x = 1,472,975,810.66/53,436.70
  6. Step 6: Final answer
    x = 27,564.87

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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.