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Finding the Fourth Proportional to 80,503.08, 120,746.42 and 21,344.73

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Solution

The fourth proportional to 80,503.08, 120,746.42 and 21,344.73 is: 32,014.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,503.08 : 120,746.42 = 21,344.73 : x
  2. Step 2: Convert to fraction form
    80,503.08/120,746.42 = 21,344.73/x
  3. Step 3: Cross multiply
    80,503.08x = 120,746.42 × 21,344.73
  4. Step 4: Simplify right side
    80,503.08x = 2,577,299,626.64
  5. Step 5: Solve for x
    x = 2,577,299,626.64/80,503.08
  6. Step 6: Final answer
    x = 32,014.92

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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.