Finding the Fourth Proportional to 85,449.12, 117,918.34 and 49,639.42
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Solution
The fourth proportional to 85,449.12, 117,918.34 and 49,639.42 is: 68,501.56
Step by Step Solution
- Step 1: Write the proportion equation
85,449.12 : 117,918.34 = 49,639.42 : x - Step 2: Convert to fraction form
85,449.12/117,918.34 = 49,639.42/x - Step 3: Cross multiply
85,449.12x = 117,918.34 × 49,639.42 - Step 4: Simplify right side
85,449.12x = 5,853,398,004.96 - Step 5: Solve for x
x = 5,853,398,004.96/85,449.12 - Step 6: Final answer
x = 68,501.56
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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.