Finding the Fourth Proportional to 71,490.74, 107,236.88 and 21,571.26
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Solution
The fourth proportional to 71,490.74, 107,236.88 and 21,571.26 is: 32,357.12
Step by Step Solution
- Step 1: Write the proportion equation
71,490.74 : 107,236.88 = 21,571.26 : x - Step 2: Convert to fraction form
71,490.74/107,236.88 = 21,571.26/x - Step 3: Cross multiply
71,490.74x = 107,236.88 × 21,571.26 - Step 4: Simplify right side
71,490.74x = 2,313,234,512.21 - Step 5: Solve for x
x = 2,313,234,512.21/71,490.74 - Step 6: Final answer
x = 32,357.12
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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.