Finding the Fourth Proportional to 78,872.19, 108,843.86 and 50,577.99
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Solution
The fourth proportional to 78,872.19, 108,843.86 and 50,577.99 is: 69,797.78
Step by Step Solution
- Step 1: Write the proportion equation
78,872.19 : 108,843.86 = 50,577.99 : x - Step 2: Convert to fraction form
78,872.19/108,843.86 = 50,577.99/x - Step 3: Cross multiply
78,872.19x = 108,843.86 × 50,577.99 - Step 4: Simplify right side
78,872.19x = 5,505,103,662.64 - Step 5: Solve for x
x = 5,505,103,662.64/78,872.19 - Step 6: Final answer
x = 69,797.78
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.