Finding the Fourth Proportional to 129,083.12, 193,624.83 and 40,337.09
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Solution
The fourth proportional to 129,083.12, 193,624.83 and 40,337.09 is: 60,505.68
Step by Step Solution
- Step 1: Write the proportion equation
129,083.12 : 193,624.83 = 40,337.09 : x - Step 2: Convert to fraction form
129,083.12/193,624.83 = 40,337.09/x - Step 3: Cross multiply
129,083.12x = 193,624.83 × 40,337.09 - Step 4: Simplify right side
129,083.12x = 7,810,261,951.91 - Step 5: Solve for x
x = 7,810,261,951.91/129,083.12 - Step 6: Final answer
x = 60,505.68
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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.