Finding the Fourth Proportional to 80,490.88, 120,708.98 and 27,888.09
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Solution
The fourth proportional to 80,490.88, 120,708.98 and 27,888.09 is: 41,822.66
Step by Step Solution
- Step 1: Write the proportion equation
80,490.88 : 120,708.98 = 27,888.09 : x - Step 2: Convert to fraction form
80,490.88/120,708.98 = 27,888.09/x - Step 3: Cross multiply
80,490.88x = 120,708.98 × 27,888.09 - Step 4: Simplify right side
80,490.88x = 3,366,342,898.05 - Step 5: Solve for x
x = 3,366,342,898.05/80,490.88 - Step 6: Final answer
x = 41,822.66
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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.