Finding the Fourth Proportional to 99,906.40, 137,880.19 and 54,591.09
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Solution
The fourth proportional to 99,906.40, 137,880.19 and 54,591.09 is: 75,340.82
Step by Step Solution
- Step 1: Write the proportion equation
99,906.40 : 137,880.19 = 54,591.09 : x - Step 2: Convert to fraction form
99,906.40/137,880.19 = 54,591.09/x - Step 3: Cross multiply
99,906.40x = 137,880.19 × 54,591.09 - Step 4: Simplify right side
99,906.40x = 7,527,030,188.27 - Step 5: Solve for x
x = 7,527,030,188.27/99,906.40 - Step 6: Final answer
x = 75,340.82
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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.