Finding the Fourth Proportional to 85,481.81, 117,961.43 and 49,668.99
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Solution
The fourth proportional to 85,481.81, 117,961.43 and 49,668.99 is: 68,541.20
Step by Step Solution
- Step 1: Write the proportion equation
85,481.81 : 117,961.43 = 49,668.99 : x - Step 2: Convert to fraction form
85,481.81/117,961.43 = 49,668.99/x - Step 3: Cross multiply
85,481.81x = 117,961.43 × 49,668.99 - Step 4: Simplify right side
85,481.81x = 5,859,025,211.23 - Step 5: Solve for x
x = 5,859,025,211.23/85,481.81 - Step 6: Final answer
x = 68,541.20
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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.