Finding the Fourth Proportional to 87,945.75, 121,369.46 and 48,201.75
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Solution
The fourth proportional to 87,945.75, 121,369.46 and 48,201.75 is: 66,520.78
Step by Step Solution
- Step 1: Write the proportion equation
87,945.75 : 121,369.46 = 48,201.75 : x - Step 2: Convert to fraction form
87,945.75/121,369.46 = 48,201.75/x - Step 3: Cross multiply
87,945.75x = 121,369.46 × 48,201.75 - Step 4: Simplify right side
87,945.75x = 5,850,220,127.55 - Step 5: Solve for x
x = 5,850,220,127.55/87,945.75 - Step 6: Final answer
x = 66,520.78
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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.