Finding the Fourth Proportional to 71,685.63, 107,514.02 and 68,129.03
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Solution
The fourth proportional to 71,685.63, 107,514.02 and 68,129.03 is: 102,179.82
Step by Step Solution
- Step 1: Write the proportion equation
71,685.63 : 107,514.02 = 68,129.03 : x - Step 2: Convert to fraction form
71,685.63/107,514.02 = 68,129.03/x - Step 3: Cross multiply
71,685.63x = 107,514.02 × 68,129.03 - Step 4: Simplify right side
71,685.63x = 7,324,825,015.79 - Step 5: Solve for x
x = 7,324,825,015.79/71,685.63 - Step 6: Final answer
x = 102,179.82
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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.