Finding the Fourth Proportional to 99,816.48, 137,740.84 and 54,485.44
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Solution
The fourth proportional to 99,816.48, 137,740.84 and 54,485.44 is: 75,186.69
Step by Step Solution
- Step 1: Write the proportion equation
99,816.48 : 137,740.84 = 54,485.44 : x - Step 2: Convert to fraction form
99,816.48/137,740.84 = 54,485.44/x - Step 3: Cross multiply
99,816.48x = 137,740.84 × 54,485.44 - Step 4: Simplify right side
99,816.48x = 7,504,870,273.37 - Step 5: Solve for x
x = 7,504,870,273.37/99,816.48 - Step 6: Final answer
x = 75,186.69
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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.