Finding the Fourth Proportional to 81,785.26, 122,677.88 and 26,381.26
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Solution
The fourth proportional to 81,785.26, 122,677.88 and 26,381.26 is: 39,571.89
Step by Step Solution
- Step 1: Write the proportion equation
81,785.26 : 122,677.88 = 26,381.26 : x - Step 2: Convert to fraction form
81,785.26/122,677.88 = 26,381.26/x - Step 3: Cross multiply
81,785.26x = 122,677.88 × 26,381.26 - Step 4: Simplify right side
81,785.26x = 3,236,397,048.53 - Step 5: Solve for x
x = 3,236,397,048.53/81,785.26 - Step 6: Final answer
x = 39,571.89
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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.