Finding the Fourth Proportional to 129,847.63, 194,796.69 and 49,879.75
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Solution
The fourth proportional to 129,847.63, 194,796.69 and 49,879.75 is: 74,829.32
Step by Step Solution
- Step 1: Write the proportion equation
129,847.63 : 194,796.69 = 49,879.75 : x - Step 2: Convert to fraction form
129,847.63/194,796.69 = 49,879.75/x - Step 3: Cross multiply
129,847.63x = 194,796.69 × 49,879.75 - Step 4: Simplify right side
129,847.63x = 9,716,410,198.03 - Step 5: Solve for x
x = 9,716,410,198.03/129,847.63 - Step 6: Final answer
x = 74,829.32
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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.