Finding the Fourth Proportional to 87,414.31, 120,650.85 and 55,576.99
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Solution
The fourth proportional to 87,414.31, 120,650.85 and 55,576.99 is: 76,708.39
Step by Step Solution
- Step 1: Write the proportion equation
87,414.31 : 120,650.85 = 55,576.99 : x - Step 2: Convert to fraction form
87,414.31/120,650.85 = 55,576.99/x - Step 3: Cross multiply
87,414.31x = 120,650.85 × 55,576.99 - Step 4: Simplify right side
87,414.31x = 6,705,410,202.80 - Step 5: Solve for x
x = 6,705,410,202.80/87,414.31 - Step 6: Final answer
x = 76,708.39
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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.