Finding the Fourth Proportional to 75,121.22, 103,668.51 and 41,129.14
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Solution
The fourth proportional to 75,121.22, 103,668.51 and 41,129.14 is: 56,758.88
Step by Step Solution
- Step 1: Write the proportion equation
75,121.22 : 103,668.51 = 41,129.14 : x - Step 2: Convert to fraction form
75,121.22/103,668.51 = 41,129.14/x - Step 3: Cross multiply
75,121.22x = 103,668.51 × 41,129.14 - Step 4: Simplify right side
75,121.22x = 4,263,796,661.38 - Step 5: Solve for x
x = 4,263,796,661.38/75,121.22 - Step 6: Final answer
x = 56,758.88
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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.