Finding the Fourth Proportional to 85,247.91, 117,639.81 and 49,435.65
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Solution
The fourth proportional to 85,247.91, 117,639.81 and 49,435.65 is: 68,219.86
Step by Step Solution
- Step 1: Write the proportion equation
85,247.91 : 117,639.81 = 49,435.65 : x - Step 2: Convert to fraction form
85,247.91/117,639.81 = 49,435.65/x - Step 3: Cross multiply
85,247.91x = 117,639.81 × 49,435.65 - Step 4: Simplify right side
85,247.91x = 5,815,600,473.23 - Step 5: Solve for x
x = 5,815,600,473.23/85,247.91 - Step 6: Final answer
x = 68,219.86
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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.