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Finding the Fourth Proportional to 80,015.79, 120,099 and 40,601.19

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Solution

The fourth proportional to 80,015.79, 120,099 and 40,601.19 is: 60,940.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,015.79 : 120,099 = 40,601.19 : x
  2. Step 2: Convert to fraction form
    80,015.79/120,099 = 40,601.19/x
  3. Step 3: Cross multiply
    80,015.79x = 120,099 × 40,601.19
  4. Step 4: Simplify right side
    80,015.79x = 4,876,161,717.32
  5. Step 5: Solve for x
    x = 4,876,161,717.32/80,015.79
  6. Step 6: Final answer
    x = 60,940.00

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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.