Finding the Fourth Proportional to 129,311.28, 193,974.21 and 40,562.82
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Solution
The fourth proportional to 129,311.28, 193,974.21 and 40,562.82 is: 60,846.52
Step by Step Solution
- Step 1: Write the proportion equation
129,311.28 : 193,974.21 = 40,562.82 : x - Step 2: Convert to fraction form
129,311.28/193,974.21 = 40,562.82/x - Step 3: Cross multiply
129,311.28x = 193,974.21 × 40,562.82 - Step 4: Simplify right side
129,311.28x = 7,868,140,964.87 - Step 5: Solve for x
x = 7,868,140,964.87/129,311.28 - Step 6: Final answer
x = 60,846.52
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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.