Finding the Fourth Proportional to 87,603.75, 120,893.19 and 47,859.75
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Solution
The fourth proportional to 87,603.75, 120,893.19 and 47,859.75 is: 66,046.46
Step by Step Solution
- Step 1: Write the proportion equation
87,603.75 : 120,893.19 = 47,859.75 : x - Step 2: Convert to fraction form
87,603.75/120,893.19 = 47,859.75/x - Step 3: Cross multiply
87,603.75x = 120,893.19 × 47,859.75 - Step 4: Simplify right side
87,603.75x = 5,785,917,850.10 - Step 5: Solve for x
x = 5,785,917,850.10/87,603.75 - Step 6: Final answer
x = 66,046.46
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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.