Finding the Fourth Proportional to 128,589.62, 192,897.12 and 44,338.70
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Solution
The fourth proportional to 128,589.62, 192,897.12 and 44,338.70 is: 66,512.42
Step by Step Solution
- Step 1: Write the proportion equation
128,589.62 : 192,897.12 = 44,338.70 : x - Step 2: Convert to fraction form
128,589.62/192,897.12 = 44,338.70/x - Step 3: Cross multiply
128,589.62x = 192,897.12 × 44,338.70 - Step 4: Simplify right side
128,589.62x = 8,552,806,570.06 - Step 5: Solve for x
x = 8,552,806,570.06/128,589.62 - Step 6: Final answer
x = 66,512.42
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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.