Finding the Fourth Proportional to 76,721.08, 115,087.02 and 20,561.08
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Solution
The fourth proportional to 76,721.08, 115,087.02 and 20,561.08 is: 30,843.07
Step by Step Solution
- Step 1: Write the proportion equation
76,721.08 : 115,087.02 = 20,561.08 : x - Step 2: Convert to fraction form
76,721.08/115,087.02 = 20,561.08/x - Step 3: Cross multiply
76,721.08x = 115,087.02 × 20,561.08 - Step 4: Simplify right side
76,721.08x = 2,366,313,425.18 - Step 5: Solve for x
x = 2,366,313,425.18/76,721.08 - Step 6: Final answer
x = 30,843.07
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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.