Finding the Fourth Proportional to 85,418.96, 117,869.18 and 49,601.96
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Solution
The fourth proportional to 85,418.96, 117,869.18 and 49,601.96 is: 68,445.49
Step by Step Solution
- Step 1: Write the proportion equation
85,418.96 : 117,869.18 = 49,601.96 : x - Step 2: Convert to fraction form
85,418.96/117,869.18 = 49,601.96/x - Step 3: Cross multiply
85,418.96x = 117,869.18 × 49,601.96 - Step 4: Simplify right side
85,418.96x = 5,846,542,351.59 - Step 5: Solve for x
x = 5,846,542,351.59/85,418.96 - Step 6: Final answer
x = 68,445.49
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1.5x scale
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.