Finding the Fourth Proportional to 86,519.75, 129,778.79 and 27,355.41
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Solution
The fourth proportional to 86,519.75, 129,778.79 and 27,355.41 is: 41,032.85
Step by Step Solution
- Step 1: Write the proportion equation
86,519.75 : 129,778.79 = 27,355.41 : x - Step 2: Convert to fraction form
86,519.75/129,778.79 = 27,355.41/x - Step 3: Cross multiply
86,519.75x = 129,778.79 × 27,355.41 - Step 4: Simplify right side
86,519.75x = 3,550,151,872.98 - Step 5: Solve for x
x = 3,550,151,872.98/86,519.75 - Step 6: Final answer
x = 41,032.85
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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.