Finding the Fourth Proportional to 68,586.21, 102,879.32 and 21,839.09
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Solution
The fourth proportional to 68,586.21, 102,879.32 and 21,839.09 is: 32,758.63
Step by Step Solution
- Step 1: Write the proportion equation
68,586.21 : 102,879.32 = 21,839.09 : x - Step 2: Convert to fraction form
68,586.21/102,879.32 = 21,839.09/x - Step 3: Cross multiply
68,586.21x = 102,879.32 × 21,839.09 - Step 4: Simplify right side
68,586.21x = 2,246,790,105.03 - Step 5: Solve for x
x = 2,246,790,105.03/68,586.21 - Step 6: Final answer
x = 32,758.63
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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.