Finding the Fourth Proportional to 75,121.91, 103,738.47 and 48,310.97
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Solution
The fourth proportional to 75,121.91, 103,738.47 and 48,310.97 is: 66,714.31
Step by Step Solution
- Step 1: Write the proportion equation
75,121.91 : 103,738.47 = 48,310.97 : x - Step 2: Convert to fraction form
75,121.91/103,738.47 = 48,310.97/x - Step 3: Cross multiply
75,121.91x = 103,738.47 × 48,310.97 - Step 4: Simplify right side
75,121.91x = 5,011,706,112.02 - Step 5: Solve for x
x = 5,011,706,112.02/75,121.91 - Step 6: Final answer
x = 66,714.31
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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.