Finding the Fourth Proportional to 80,842.87, 110,755.26 and 77,812.65
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Solution
The fourth proportional to 80,842.87, 110,755.26 and 77,812.65 is: 106,603.84
Step by Step Solution
- Step 1: Write the proportion equation
80,842.87 : 110,755.26 = 77,812.65 : x - Step 2: Convert to fraction form
80,842.87/110,755.26 = 77,812.65/x - Step 3: Cross multiply
80,842.87x = 110,755.26 × 77,812.65 - Step 4: Simplify right side
80,842.87x = 8,618,160,282.04 - Step 5: Solve for x
x = 8,618,160,282.04/80,842.87 - Step 6: Final answer
x = 106,603.84
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Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.