Finding the Fourth Proportional to 80,800.80, 121,201.20 and 57,181.20
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Solution
The fourth proportional to 80,800.80, 121,201.20 and 57,181.20 is: 85,771.80
Step by Step Solution
- Step 1: Write the proportion equation
80,800.80 : 121,201.20 = 57,181.20 : x - Step 2: Convert to fraction form
80,800.80/121,201.20 = 57,181.20/x - Step 3: Cross multiply
80,800.80x = 121,201.20 × 57,181.20 - Step 4: Simplify right side
80,800.80x = 6,930,430,057.44 - Step 5: Solve for x
x = 6,930,430,057.44/80,800.80 - Step 6: Final answer
x = 85,771.80
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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.