Finding the Fourth Proportional to 99,805.44, 137,725.64 and 54,474.42
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Solution
The fourth proportional to 99,805.44, 137,725.64 and 54,474.42 is: 75,171.50
Step by Step Solution
- Step 1: Write the proportion equation
99,805.44 : 137,725.64 = 54,474.42 : x - Step 2: Convert to fraction form
99,805.44/137,725.64 = 54,474.42/x - Step 3: Cross multiply
99,805.44x = 137,725.64 × 54,474.42 - Step 4: Simplify right side
99,805.44x = 7,502,524,358.13 - Step 5: Solve for x
x = 7,502,524,358.13/99,805.44 - Step 6: Final answer
x = 75,171.50
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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.