Finding the Fourth Proportional to 71,441.91, 107,152.34 and 18,855.09
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Solution
The fourth proportional to 71,441.91, 107,152.34 and 18,855.09 is: 28,279.86
Step by Step Solution
- Step 1: Write the proportion equation
71,441.91 : 107,152.34 = 18,855.09 : x - Step 2: Convert to fraction form
71,441.91/107,152.34 = 18,855.09/x - Step 3: Cross multiply
71,441.91x = 107,152.34 × 18,855.09 - Step 4: Simplify right side
71,441.91x = 2,020,366,920.14 - Step 5: Solve for x
x = 2,020,366,920.14/71,441.91 - Step 6: Final answer
x = 28,279.86
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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.