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Finding the Fourth Proportional to 80,590.95, 120,837.56 and 30,674.43

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Solution

The fourth proportional to 80,590.95, 120,837.56 and 30,674.43 is: 45,993.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,590.95 : 120,837.56 = 30,674.43 : x
  2. Step 2: Convert to fraction form
    80,590.95/120,837.56 = 30,674.43/x
  3. Step 3: Cross multiply
    80,590.95x = 120,837.56 × 30,674.43
  4. Step 4: Simplify right side
    80,590.95x = 3,706,623,122.22
  5. Step 5: Solve for x
    x = 3,706,623,122.22/80,590.95
  6. Step 6: Final answer
    x = 45,993.04

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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.