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Finding the Fourth Proportional to 80,528.68, 120,801.32 and 21,364.44

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Solution

The fourth proportional to 80,528.68, 120,801.32 and 21,364.44 is: 32,048.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,528.68 : 120,801.32 = 21,364.44 : x
  2. Step 2: Convert to fraction form
    80,528.68/120,801.32 = 21,364.44/x
  3. Step 3: Cross multiply
    80,528.68x = 120,801.32 × 21,364.44
  4. Step 4: Simplify right side
    80,528.68x = 2,580,852,553.06
  5. Step 5: Solve for x
    x = 2,580,852,553.06/80,528.68
  6. Step 6: Final answer
    x = 32,048.86

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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.