Finding the Fourth Proportional to 75,414.42, 112,990.96 and 45,770.14
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Solution
The fourth proportional to 75,414.42, 112,990.96 and 45,770.14 is: 68,575.90
Step by Step Solution
- Step 1: Write the proportion equation
75,414.42 : 112,990.96 = 45,770.14 : x - Step 2: Convert to fraction form
75,414.42/112,990.96 = 45,770.14/x - Step 3: Cross multiply
75,414.42x = 112,990.96 × 45,770.14 - Step 4: Simplify right side
75,414.42x = 5,171,611,264.13 - Step 5: Solve for x
x = 5,171,611,264.13/75,414.42 - Step 6: Final answer
x = 68,575.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.