Finding the Fourth Proportional to 129,579.35, 194,375.97 and 40,839.80
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Solution
The fourth proportional to 129,579.35, 194,375.97 and 40,839.80 is: 61,261.88
Step by Step Solution
- Step 1: Write the proportion equation
129,579.35 : 194,375.97 = 40,839.80 : x - Step 2: Convert to fraction form
129,579.35/194,375.97 = 40,839.80/x - Step 3: Cross multiply
129,579.35x = 194,375.97 × 40,839.80 - Step 4: Simplify right side
129,579.35x = 7,938,274,767.73 - Step 5: Solve for x
x = 7,938,274,767.73/129,579.35 - Step 6: Final answer
x = 61,261.88
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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.