Finding the Fourth Proportional to 77,344.70, 115,961.70 and 29,919.20
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Solution
The fourth proportional to 77,344.70, 115,961.70 and 29,919.20 is: 44,857.39
Step by Step Solution
- Step 1: Write the proportion equation
77,344.70 : 115,961.70 = 29,919.20 : x - Step 2: Convert to fraction form
77,344.70/115,961.70 = 29,919.20/x - Step 3: Cross multiply
77,344.70x = 115,961.70 × 29,919.20 - Step 4: Simplify right side
77,344.70x = 3,469,481,294.64 - Step 5: Solve for x
x = 3,469,481,294.64/77,344.70 - Step 6: Final answer
x = 44,857.39
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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.