Finding the Fourth Proportional to 83,861.28, 115,728.12 and 48,051.84
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Solution
The fourth proportional to 83,861.28, 115,728.12 and 48,051.84 is: 66,311.28
Step by Step Solution
- Step 1: Write the proportion equation
83,861.28 : 115,728.12 = 48,051.84 : x - Step 2: Convert to fraction form
83,861.28/115,728.12 = 48,051.84/x - Step 3: Cross multiply
83,861.28x = 115,728.12 × 48,051.84 - Step 4: Simplify right side
83,861.28x = 5,560,949,105.74 - Step 5: Solve for x
x = 5,560,949,105.74/83,861.28 - Step 6: Final answer
x = 66,311.28
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.