Finding the Fourth Proportional to 81,751.27, 112,817.49 and 49,486.63
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Solution
The fourth proportional to 81,751.27, 112,817.49 and 49,486.63 is: 68,291.99
Step by Step Solution
- Step 1: Write the proportion equation
81,751.27 : 112,817.49 = 49,486.63 : x - Step 2: Convert to fraction form
81,751.27/112,817.49 = 49,486.63/x - Step 3: Cross multiply
81,751.27x = 112,817.49 × 49,486.63 - Step 4: Simplify right side
81,751.27x = 5,582,956,821.07 - Step 5: Solve for x
x = 5,582,956,821.07/81,751.27 - Step 6: Final answer
x = 68,291.99
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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.