Finding the Fourth Proportional to 87,415.04, 120,632.72 and 49,691.68
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Solution
The fourth proportional to 87,415.04, 120,632.72 and 49,691.68 is: 68,574.50
Step by Step Solution
- Step 1: Write the proportion equation
87,415.04 : 120,632.72 = 49,691.68 : x - Step 2: Convert to fraction form
87,415.04/120,632.72 = 49,691.68/x - Step 3: Cross multiply
87,415.04x = 120,632.72 × 49,691.68 - Step 4: Simplify right side
87,415.04x = 5,994,442,519.77 - Step 5: Solve for x
x = 5,994,442,519.77/87,415.04 - Step 6: Final answer
x = 68,574.50
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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.