Finding the Fourth Proportional to 128,583.44, 192,893.40 and 39,843.92
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Solution
The fourth proportional to 128,583.44, 192,893.40 and 39,843.92 is: 59,771.53
Step by Step Solution
- Step 1: Write the proportion equation
128,583.44 : 192,893.40 = 39,843.92 : x - Step 2: Convert to fraction form
128,583.44/192,893.40 = 39,843.92/x - Step 3: Cross multiply
128,583.44x = 192,893.40 × 39,843.92 - Step 4: Simplify right side
128,583.44x = 7,685,629,198.13 - Step 5: Solve for x
x = 7,685,629,198.13/128,583.44 - Step 6: Final answer
x = 59,771.53
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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.