Finding the Fourth Proportional to 87,480.12, 131,224.28 and 28,320.44
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Solution
The fourth proportional to 87,480.12, 131,224.28 and 28,320.44 is: 42,481.99
Step by Step Solution
- Step 1: Write the proportion equation
87,480.12 : 131,224.28 = 28,320.44 : x - Step 2: Convert to fraction form
87,480.12/131,224.28 = 28,320.44/x - Step 3: Cross multiply
87,480.12x = 131,224.28 × 28,320.44 - Step 4: Simplify right side
87,480.12x = 3,716,329,348.28 - Step 5: Solve for x
x = 3,716,329,348.28/87,480.12 - Step 6: Final answer
x = 42,481.99
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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.