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Finding the Fourth Proportional to 80,543.52, 120,806.01 and 21,383.82

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Solution

The fourth proportional to 80,543.52, 120,806.01 and 21,383.82 is: 32,073.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,543.52 : 120,806.01 = 21,383.82 : x
  2. Step 2: Convert to fraction form
    80,543.52/120,806.01 = 21,383.82/x
  3. Step 3: Cross multiply
    80,543.52x = 120,806.01 × 21,383.82
  4. Step 4: Simplify right side
    80,543.52x = 2,583,293,972.76
  5. Step 5: Solve for x
    x = 2,583,293,972.76/80,543.52
  6. Step 6: Final answer
    x = 32,073.27

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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.