Finding the Fourth Proportional to 87,341.10, 131,039.37 and 31,179.99
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Solution
The fourth proportional to 87,341.10, 131,039.37 and 31,179.99 is: 46,779.88
Step by Step Solution
- Step 1: Write the proportion equation
87,341.10 : 131,039.37 = 31,179.99 : x - Step 2: Convert to fraction form
87,341.10/131,039.37 = 31,179.99/x - Step 3: Cross multiply
87,341.10x = 131,039.37 × 31,179.99 - Step 4: Simplify right side
87,341.10x = 4,085,806,246.21 - Step 5: Solve for x
x = 4,085,806,246.21/87,341.10 - Step 6: Final answer
x = 46,779.88
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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.