Finding the Fourth Proportional to 80,544.42, 120,274.16 and 65,782.62
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Solution
The fourth proportional to 80,544.42, 120,274.16 and 65,782.62 is: 98,230.88
Step by Step Solution
- Step 1: Write the proportion equation
80,544.42 : 120,274.16 = 65,782.62 : x - Step 2: Convert to fraction form
80,544.42/120,274.16 = 65,782.62/x - Step 3: Cross multiply
80,544.42x = 120,274.16 × 65,782.62 - Step 4: Simplify right side
80,544.42x = 7,911,949,034.19 - Step 5: Solve for x
x = 7,911,949,034.19/80,544.42 - Step 6: Final answer
x = 98,230.88
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.