Finding the Fourth Proportional to 18,145,687.80, 27,218,531.70 and 8,067,991.80
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Solution
The fourth proportional to 18,145,687.80, 27,218,531.70 and 8,067,991.80 is: 12,101,987.70
Step by Step Solution
- Step 1: Write the proportion equation
18,145,687.80 : 27,218,531.70 = 8,067,991.80 : x - Step 2: Convert to fraction form
18,145,687.80/27,218,531.70 = 8,067,991.80/x - Step 3: Cross multiply
18,145,687.80x = 27,218,531.70 × 8,067,991.80 - Step 4: Simplify right side
18,145,687.80x = 219,598,890,563,640.06 - Step 5: Solve for x
x = 219,598,890,563,640.06/18,145,687.80 - Step 6: Final answer
x = 12,101,987.70
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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.