Finding the Fourth Proportional to 76,700.25, 115,120.17 and 39,286.08
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Solution
The fourth proportional to 76,700.25, 115,120.17 and 39,286.08 is: 58,964.87
Step by Step Solution
- Step 1: Write the proportion equation
76,700.25 : 115,120.17 = 39,286.08 : x - Step 2: Convert to fraction form
76,700.25/115,120.17 = 39,286.08/x - Step 3: Cross multiply
76,700.25x = 115,120.17 × 39,286.08 - Step 4: Simplify right side
76,700.25x = 4,522,620,208.23 - Step 5: Solve for x
x = 4,522,620,208.23/76,700.25 - Step 6: Final answer
x = 58,964.87
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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.