Finding the Fourth Proportional to 85,129.75, 127,713.42 and 25,969.99
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Solution
The fourth proportional to 85,129.75, 127,713.42 and 25,969.99 is: 38,960.72
Step by Step Solution
- Step 1: Write the proportion equation
85,129.75 : 127,713.42 = 25,969.99 : x - Step 2: Convert to fraction form
85,129.75/127,713.42 = 25,969.99/x - Step 3: Cross multiply
85,129.75x = 127,713.42 × 25,969.99 - Step 4: Simplify right side
85,129.75x = 3,316,716,240.27 - Step 5: Solve for x
x = 3,316,716,240.27/85,129.75 - Step 6: Final answer
x = 38,960.72
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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.