Finding the Fourth Proportional to 77,107.62, 115,662.24 and 27,178.41
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Solution
The fourth proportional to 77,107.62, 115,662.24 and 27,178.41 is: 40,767.90
Step by Step Solution
- Step 1: Write the proportion equation
77,107.62 : 115,662.24 = 27,178.41 : x - Step 2: Convert to fraction form
77,107.62/115,662.24 = 27,178.41/x - Step 3: Cross multiply
77,107.62x = 115,662.24 × 27,178.41 - Step 4: Simplify right side
77,107.62x = 3,143,515,780.24 - Step 5: Solve for x
x = 3,143,515,780.24/77,107.62 - Step 6: Final answer
x = 40,767.90
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1.5x scale
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.