Home / 71,072.19-106,589.70-21,138.84

Finding the Fourth Proportional to 71,072.19, 106,589.70 and 21,138.84

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Solution

The fourth proportional to 71,072.19, 106,589.70 and 21,138.84 is: 31,702.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,072.19 : 106,589.70 = 21,138.84 : x
  2. Step 2: Convert to fraction form
    71,072.19/106,589.70 = 21,138.84/x
  3. Step 3: Cross multiply
    71,072.19x = 106,589.70 × 21,138.84
  4. Step 4: Simplify right side
    71,072.19x = 2,253,182,613.95
  5. Step 5: Solve for x
    x = 2,253,182,613.95/71,072.19
  6. Step 6: Final answer
    x = 31,702.73

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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.