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Finding the Fourth Proportional to 80,593.44, 120,890.04 and 21,429.12

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Solution

The fourth proportional to 80,593.44, 120,890.04 and 21,429.12 is: 32,143.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,593.44 : 120,890.04 = 21,429.12 : x
  2. Step 2: Convert to fraction form
    80,593.44/120,890.04 = 21,429.12/x
  3. Step 3: Cross multiply
    80,593.44x = 120,890.04 × 21,429.12
  4. Step 4: Simplify right side
    80,593.44x = 2,590,567,173.96
  5. Step 5: Solve for x
    x = 2,590,567,173.96/80,593.44
  6. Step 6: Final answer
    x = 32,143.65

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1.5x scale

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.