Finding the Fourth Proportional to 87,708.68, 131,533.21 and 28,529.66
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Solution
The fourth proportional to 87,708.68, 131,533.21 and 28,529.66 is: 42,784.79
Step by Step Solution
- Step 1: Write the proportion equation
87,708.68 : 131,533.21 = 28,529.66 : x - Step 2: Convert to fraction form
87,708.68/131,533.21 = 28,529.66/x - Step 3: Cross multiply
87,708.68x = 131,533.21 × 28,529.66 - Step 4: Simplify right side
87,708.68x = 3,752,597,760.01 - Step 5: Solve for x
x = 3,752,597,760.01/87,708.68 - Step 6: Final answer
x = 42,784.79
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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.