Home / 55,019.42-82,512.45-21,279.41

Finding the Fourth Proportional to 55,019.42, 82,512.45 and 21,279.41

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Solution

The fourth proportional to 55,019.42, 82,512.45 and 21,279.41 is: 31,912.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,019.42 : 82,512.45 = 21,279.41 : x
  2. Step 2: Convert to fraction form
    55,019.42/82,512.45 = 21,279.41/x
  3. Step 3: Cross multiply
    55,019.42x = 82,512.45 × 21,279.41
  4. Step 4: Simplify right side
    55,019.42x = 1,755,815,841.09
  5. Step 5: Solve for x
    x = 1,755,815,841.09/55,019.42
  6. Step 6: Final answer
    x = 31,912.66

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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.