Finding the Fourth Proportional to 87,632.64, 120,791.36 and 68,479.13
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Solution
The fourth proportional to 87,632.64, 120,791.36 and 68,479.13 is: 94,390.49
Step by Step Solution
- Step 1: Write the proportion equation
87,632.64 : 120,791.36 = 68,479.13 : x - Step 2: Convert to fraction form
87,632.64/120,791.36 = 68,479.13/x - Step 3: Cross multiply
87,632.64x = 120,791.36 × 68,479.13 - Step 4: Simplify right side
87,632.64x = 8,271,687,717.49 - Step 5: Solve for x
x = 8,271,687,717.49/87,632.64 - Step 6: Final answer
x = 94,390.49
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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.