Finding the Fourth Proportional to 84,589.68, 116,728.70 and 46,861.20
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Solution
The fourth proportional to 84,589.68, 116,728.70 and 46,861.20 is: 64,665.65
Step by Step Solution
- Step 1: Write the proportion equation
84,589.68 : 116,728.70 = 46,861.20 : x - Step 2: Convert to fraction form
84,589.68/116,728.70 = 46,861.20/x - Step 3: Cross multiply
84,589.68x = 116,728.70 × 46,861.20 - Step 4: Simplify right side
84,589.68x = 5,470,046,956.44 - Step 5: Solve for x
x = 5,470,046,956.44/84,589.68 - Step 6: Final answer
x = 64,665.65
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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.