Home / 80,256.21-120,375.19-21,096.49

Finding the Fourth Proportional to 80,256.21, 120,375.19 and 21,096.49

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Solution

The fourth proportional to 80,256.21, 120,375.19 and 21,096.49 is: 31,642.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,256.21 : 120,375.19 = 21,096.49 : x
  2. Step 2: Convert to fraction form
    80,256.21/120,375.19 = 21,096.49/x
  3. Step 3: Cross multiply
    80,256.21x = 120,375.19 × 21,096.49
  4. Step 4: Simplify right side
    80,256.21x = 2,539,493,992.08
  5. Step 5: Solve for x
    x = 2,539,493,992.08/80,256.21
  6. Step 6: Final answer
    x = 31,642.34

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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.