Finding the Fourth Proportional to 87,756.21, 131,609.21 and 28,597.05
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Solution
The fourth proportional to 87,756.21, 131,609.21 and 28,597.05 is: 42,887.39
Step by Step Solution
- Step 1: Write the proportion equation
87,756.21 : 131,609.21 = 28,597.05 : x - Step 2: Convert to fraction form
87,756.21/131,609.21 = 28,597.05/x - Step 3: Cross multiply
87,756.21x = 131,609.21 × 28,597.05 - Step 4: Simplify right side
87,756.21x = 3,763,635,344.87 - Step 5: Solve for x
x = 3,763,635,344.87/87,756.21 - Step 6: Final answer
x = 42,887.39
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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.