Finding the Fourth Proportional to 76,716.09, 115,089.80 and 32,342.85
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Solution
The fourth proportional to 76,716.09, 115,089.80 and 32,342.85 is: 48,520.88
Step by Step Solution
- Step 1: Write the proportion equation
76,716.09 : 115,089.80 = 32,342.85 : x - Step 2: Convert to fraction form
76,716.09/115,089.80 = 32,342.85/x - Step 3: Cross multiply
76,716.09x = 115,089.80 × 32,342.85 - Step 4: Simplify right side
76,716.09x = 3,722,331,976.22 - Step 5: Solve for x
x = 3,722,331,976.22/76,716.09 - Step 6: Final answer
x = 48,520.88
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.