Finding the Fourth Proportional to 86,645.74, 129,967.57 and 27,481.92
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Solution
The fourth proportional to 86,645.74, 129,967.57 and 27,481.92 is: 41,222.55
Step by Step Solution
- Step 1: Write the proportion equation
86,645.74 : 129,967.57 = 27,481.92 : x - Step 2: Convert to fraction form
86,645.74/129,967.57 = 27,481.92/x - Step 3: Cross multiply
86,645.74x = 129,967.57 × 27,481.92 - Step 4: Simplify right side
86,645.74x = 3,571,758,361.33 - Step 5: Solve for x
x = 3,571,758,361.33/86,645.74 - Step 6: Final answer
x = 41,222.55
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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.