Finding the Fourth Proportional to 71,115.18, 106,672.80 and 18,529.98
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Solution
The fourth proportional to 71,115.18, 106,672.80 and 18,529.98 is: 27,794.98
Step by Step Solution
- Step 1: Write the proportion equation
71,115.18 : 106,672.80 = 18,529.98 : x - Step 2: Convert to fraction form
71,115.18/106,672.80 = 18,529.98/x - Step 3: Cross multiply
71,115.18x = 106,672.80 × 18,529.98 - Step 4: Simplify right side
71,115.18x = 1,976,644,850.54 - Step 5: Solve for x
x = 1,976,644,850.54/71,115.18 - Step 6: Final answer
x = 27,794.98
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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.