Finding the Fourth Proportional to 87,338.80, 120,405.50 and 73,855.96
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Solution
The fourth proportional to 87,338.80, 120,405.50 and 73,855.96 is: 101,818.02
Step by Step Solution
- Step 1: Write the proportion equation
87,338.80 : 120,405.50 = 73,855.96 : x - Step 2: Convert to fraction form
87,338.80/120,405.50 = 73,855.96/x - Step 3: Cross multiply
87,338.80x = 120,405.50 × 73,855.96 - Step 4: Simplify right side
87,338.80x = 8,892,663,791.78 - Step 5: Solve for x
x = 8,892,663,791.78/87,338.80 - Step 6: Final answer
x = 101,818.02
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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.