Finding the Fourth Proportional to 87,903.92, 131,861.28 and 28,745.84
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Solution
The fourth proportional to 87,903.92, 131,861.28 and 28,745.84 is: 43,120.53
Step by Step Solution
- Step 1: Write the proportion equation
87,903.92 : 131,861.28 = 28,745.84 : x - Step 2: Convert to fraction form
87,903.92/131,861.28 = 28,745.84/x - Step 3: Cross multiply
87,903.92x = 131,861.28 × 28,745.84 - Step 4: Simplify right side
87,903.92x = 3,790,463,257.08 - Step 5: Solve for x
x = 3,790,463,257.08/87,903.92 - Step 6: Final answer
x = 43,120.53
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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.