Finding the Fourth Proportional to 129,566.48, 194,382.36 and 40,816.40
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Solution
The fourth proportional to 129,566.48, 194,382.36 and 40,816.40 is: 61,234.88
Step by Step Solution
- Step 1: Write the proportion equation
129,566.48 : 194,382.36 = 40,816.40 : x - Step 2: Convert to fraction form
129,566.48/194,382.36 = 40,816.40/x - Step 3: Cross multiply
129,566.48x = 194,382.36 × 40,816.40 - Step 4: Simplify right side
129,566.48x = 7,933,988,158.70 - Step 5: Solve for x
x = 7,933,988,158.70/129,566.48 - Step 6: Final answer
x = 61,234.88
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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.