Finding the Fourth Proportional to 85,621.83, 128,378.07 and 41,160.12
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Solution
The fourth proportional to 85,621.83, 128,378.07 and 41,160.12 is: 61,713.90
Step by Step Solution
- Step 1: Write the proportion equation
85,621.83 : 128,378.07 = 41,160.12 : x - Step 2: Convert to fraction form
85,621.83/128,378.07 = 41,160.12/x - Step 3: Cross multiply
85,621.83x = 128,378.07 × 41,160.12 - Step 4: Simplify right side
85,621.83x = 5,284,056,766.57 - Step 5: Solve for x
x = 5,284,056,766.57/85,621.83 - Step 6: Final answer
x = 61,713.90
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1.5x scale
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.