Finding the Fourth Proportional to 86,571.18, 129,879.78 and 27,408.06
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Solution
The fourth proportional to 86,571.18, 129,879.78 and 27,408.06 is: 41,119.37
Step by Step Solution
- Step 1: Write the proportion equation
86,571.18 : 129,879.78 = 27,408.06 : x - Step 2: Convert to fraction form
86,571.18/129,879.78 = 27,408.06/x - Step 3: Cross multiply
86,571.18x = 129,879.78 × 27,408.06 - Step 4: Simplify right side
86,571.18x = 3,559,752,803.03 - Step 5: Solve for x
x = 3,559,752,803.03/86,571.18 - Step 6: Final answer
x = 41,119.37
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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.