Finding the Fourth Proportional to 99,838.44, 137,775.21 and 54,515.19
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Solution
The fourth proportional to 99,838.44, 137,775.21 and 54,515.19 is: 75,229.96
Step by Step Solution
- Step 1: Write the proportion equation
99,838.44 : 137,775.21 = 54,515.19 : x - Step 2: Convert to fraction form
99,838.44/137,775.21 = 54,515.19/x - Step 3: Cross multiply
99,838.44x = 137,775.21 × 54,515.19 - Step 4: Simplify right side
99,838.44x = 7,510,841,750.44 - Step 5: Solve for x
x = 7,510,841,750.44/99,838.44 - Step 6: Final answer
x = 75,229.96
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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.