Home / 51,271.08-76,912.11-21,691.91

Finding the Fourth Proportional to 51,271.08, 76,912.11 and 21,691.91

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Solution

The fourth proportional to 51,271.08, 76,912.11 and 21,691.91 is: 32,540.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,271.08 : 76,912.11 = 21,691.91 : x
  2. Step 2: Convert to fraction form
    51,271.08/76,912.11 = 21,691.91/x
  3. Step 3: Cross multiply
    51,271.08x = 76,912.11 × 21,691.91
  4. Step 4: Simplify right side
    51,271.08x = 1,668,370,183.47
  5. Step 5: Solve for x
    x = 1,668,370,183.47/51,271.08
  6. Step 6: Final answer
    x = 32,540.18

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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.