Finding the Fourth Proportional to 80,249.92, 120,310.62 and 38,108.68
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Solution
The fourth proportional to 80,249.92, 120,310.62 and 38,108.68 is: 57,132.50
Step by Step Solution
- Step 1: Write the proportion equation
80,249.92 : 120,310.62 = 38,108.68 : x - Step 2: Convert to fraction form
80,249.92/120,310.62 = 38,108.68/x - Step 3: Cross multiply
80,249.92x = 120,310.62 × 38,108.68 - Step 4: Simplify right side
80,249.92x = 4,584,878,918.18 - Step 5: Solve for x
x = 4,584,878,918.18/80,249.92 - Step 6: Final answer
x = 57,132.50
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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.