Finding the Fourth Proportional to 80,287.74, 120,367.35 and 38,146.68
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Solution
The fourth proportional to 80,287.74, 120,367.35 and 38,146.68 is: 57,189.49
Step by Step Solution
- Step 1: Write the proportion equation
80,287.74 : 120,367.35 = 38,146.68 : x - Step 2: Convert to fraction form
80,287.74/120,367.35 = 38,146.68/x - Step 3: Cross multiply
80,287.74x = 120,367.35 × 38,146.68 - Step 4: Simplify right side
80,287.74x = 4,591,614,782.90 - Step 5: Solve for x
x = 4,591,614,782.90/80,287.74 - Step 6: Final answer
x = 57,189.49
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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.