Finding the Fourth Proportional to 80,105.36, 120,160.44 and 20,940.08
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Solution
The fourth proportional to 80,105.36, 120,160.44 and 20,940.08 is: 31,410.75
Step by Step Solution
- Step 1: Write the proportion equation
80,105.36 : 120,160.44 = 20,940.08 : x - Step 2: Convert to fraction form
80,105.36/120,160.44 = 20,940.08/x - Step 3: Cross multiply
80,105.36x = 120,160.44 × 20,940.08 - Step 4: Simplify right side
80,105.36x = 2,516,169,226.44 - Step 5: Solve for x
x = 2,516,169,226.44/80,105.36 - Step 6: Final answer
x = 31,410.75
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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.