Finding the Fourth Proportional to 75,121.14, 103,668.79 and 41,131.06
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Solution
The fourth proportional to 75,121.14, 103,668.79 and 41,131.06 is: 56,761.75
Step by Step Solution
- Step 1: Write the proportion equation
75,121.14 : 103,668.79 = 41,131.06 : x - Step 2: Convert to fraction form
75,121.14/103,668.79 = 41,131.06/x - Step 3: Cross multiply
75,121.14x = 103,668.79 × 41,131.06 - Step 4: Simplify right side
75,121.14x = 4,264,007,221.62 - Step 5: Solve for x
x = 4,264,007,221.62/75,121.14 - Step 6: Final answer
x = 56,761.75
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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.