Finding the Fourth Proportional to 81,202.42, 121,720.26 and 41,147.38
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Solution
The fourth proportional to 81,202.42, 121,720.26 and 41,147.38 is: 61,678.82
Step by Step Solution
- Step 1: Write the proportion equation
81,202.42 : 121,720.26 = 41,147.38 : x - Step 2: Convert to fraction form
81,202.42/121,720.26 = 41,147.38/x - Step 3: Cross multiply
81,202.42x = 121,720.26 × 41,147.38 - Step 4: Simplify right side
81,202.42x = 5,008,469,791.92 - Step 5: Solve for x
x = 5,008,469,791.92/81,202.42 - Step 6: Final answer
x = 61,678.82
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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.