Finding the Fourth Proportional to 128,691.44, 193,062.96 and 44,454.68
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Solution
The fourth proportional to 128,691.44, 193,062.96 and 44,454.68 is: 66,690.93
Step by Step Solution
- Step 1: Write the proportion equation
128,691.44 : 193,062.96 = 44,454.68 : x - Step 2: Convert to fraction form
128,691.44/193,062.96 = 44,454.68/x - Step 3: Cross multiply
128,691.44x = 193,062.96 × 44,454.68 - Step 4: Simplify right side
128,691.44x = 8,582,551,141.34 - Step 5: Solve for x
x = 8,582,551,141.34/128,691.44 - Step 6: Final answer
x = 66,690.93
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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.