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Finding the Fourth Proportional to 80,362.80, 120,473.19 and 30,408.21

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Solution

The fourth proportional to 80,362.80, 120,473.19 and 30,408.21 is: 45,585.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,362.80 : 120,473.19 = 30,408.21 : x
  2. Step 2: Convert to fraction form
    80,362.80/120,473.19 = 30,408.21/x
  3. Step 3: Cross multiply
    80,362.80x = 120,473.19 × 30,408.21
  4. Step 4: Simplify right side
    80,362.80x = 3,663,374,060.89
  5. Step 5: Solve for x
    x = 3,663,374,060.89/80,362.80
  6. Step 6: Final answer
    x = 45,585.45

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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.