Finding the Fourth Proportional to 80,407.80, 120,611.70 and 27,811.80
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Solution
The fourth proportional to 80,407.80, 120,611.70 and 27,811.80 is: 41,717.70
Step by Step Solution
- Step 1: Write the proportion equation
80,407.80 : 120,611.70 = 27,811.80 : x - Step 2: Convert to fraction form
80,407.80/120,611.70 = 27,811.80/x - Step 3: Cross multiply
80,407.80x = 120,611.70 × 27,811.80 - Step 4: Simplify right side
80,407.80x = 3,354,428,478.06 - Step 5: Solve for x
x = 3,354,428,478.06/80,407.80 - Step 6: Final answer
x = 41,717.70
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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.