Finding the Fourth Proportional to 80,988.05, 111,734.79 and 54,147.53
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Solution
The fourth proportional to 80,988.05, 111,734.79 and 54,147.53 is: 74,704.39
Step by Step Solution
- Step 1: Write the proportion equation
80,988.05 : 111,734.79 = 54,147.53 : x - Step 2: Convert to fraction form
80,988.05/111,734.79 = 54,147.53/x - Step 3: Cross multiply
80,988.05x = 111,734.79 × 54,147.53 - Step 4: Simplify right side
80,988.05x = 6,050,162,893.57 - Step 5: Solve for x
x = 6,050,162,893.57/80,988.05 - Step 6: Final answer
x = 74,704.39
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.