Finding the Fourth Proportional to 87,370.80, 120,591.64 and 61,850.64
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Solution
The fourth proportional to 87,370.80, 120,591.64 and 61,850.64 is: 85,367.99
Step by Step Solution
- Step 1: Write the proportion equation
87,370.80 : 120,591.64 = 61,850.64 : x - Step 2: Convert to fraction form
87,370.80/120,591.64 = 61,850.64/x - Step 3: Cross multiply
87,370.80x = 120,591.64 × 61,850.64 - Step 4: Simplify right side
87,370.80x = 7,458,669,615.94 - Step 5: Solve for x
x = 7,458,669,615.94/87,370.80 - Step 6: Final answer
x = 85,367.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.