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Finding the Fourth Proportional to 80,652.58, 120,954.26 and 21,480.55

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Solution

The fourth proportional to 80,652.58, 120,954.26 and 21,480.55 is: 32,214.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,652.58 : 120,954.26 = 21,480.55 : x
  2. Step 2: Convert to fraction form
    80,652.58/120,954.26 = 21,480.55/x
  3. Step 3: Cross multiply
    80,652.58x = 120,954.26 × 21,480.55
  4. Step 4: Simplify right side
    80,652.58x = 2,598,163,780.96
  5. Step 5: Solve for x
    x = 2,598,163,780.96/80,652.58
  6. Step 6: Final answer
    x = 32,214.27

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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.