Finding the Fourth Proportional to 87,131.63, 120,197.22 and 56,934.63
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Solution
The fourth proportional to 87,131.63, 120,197.22 and 56,934.63 is: 78,540.75
Step by Step Solution
- Step 1: Write the proportion equation
87,131.63 : 120,197.22 = 56,934.63 : x - Step 2: Convert to fraction form
87,131.63/120,197.22 = 56,934.63/x - Step 3: Cross multiply
87,131.63x = 120,197.22 × 56,934.63 - Step 4: Simplify right side
87,131.63x = 6,843,384,034.22 - Step 5: Solve for x
x = 6,843,384,034.22/87,131.63 - Step 6: Final answer
x = 78,540.75
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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.