Finding the Fourth Proportional to 79,414.20, 119,121.30 and 66,583.80
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Solution
The fourth proportional to 79,414.20, 119,121.30 and 66,583.80 is: 99,875.70
Step by Step Solution
- Step 1: Write the proportion equation
79,414.20 : 119,121.30 = 66,583.80 : x - Step 2: Convert to fraction form
79,414.20/119,121.30 = 66,583.80/x - Step 3: Cross multiply
79,414.20x = 119,121.30 × 66,583.80 - Step 4: Simplify right side
79,414.20x = 7,931,548,814.94 - Step 5: Solve for x
x = 7,931,548,814.94/79,414.20 - Step 6: Final answer
x = 99,875.70
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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.