Finding the Fourth Proportional to 91,135.80, 125,755.20 and 50,843.70
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Solution
The fourth proportional to 91,135.80, 125,755.20 and 50,843.70 is: 70,157.50
Step by Step Solution
- Step 1: Write the proportion equation
91,135.80 : 125,755.20 = 50,843.70 : x - Step 2: Convert to fraction form
91,135.80/125,755.20 = 50,843.70/x - Step 3: Cross multiply
91,135.80x = 125,755.20 × 50,843.70 - Step 4: Simplify right side
91,135.80x = 6,393,859,662.24 - Step 5: Solve for x
x = 6,393,859,662.24/91,135.80 - Step 6: Final answer
x = 70,157.50
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.