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Finding the Fourth Proportional to 80,648.95, 120,948.82 and 21,476.95

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Solution

The fourth proportional to 80,648.95, 120,948.82 and 21,476.95 is: 32,208.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,648.95 : 120,948.82 = 21,476.95 : x
  2. Step 2: Convert to fraction form
    80,648.95/120,948.82 = 21,476.95/x
  3. Step 3: Cross multiply
    80,648.95x = 120,948.82 × 21,476.95
  4. Step 4: Simplify right side
    80,648.95x = 2,597,611,759.70
  5. Step 5: Solve for x
    x = 2,597,611,759.70/80,648.95
  6. Step 6: Final answer
    x = 32,208.87

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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.