Finding the Fourth Proportional to 66,431,747.80, 99,647,621.70 and 18,562,691.80
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Solution
The fourth proportional to 66,431,747.80, 99,647,621.70 and 18,562,691.80 is: 27,844,037.70
Step by Step Solution
- Step 1: Write the proportion equation
66,431,747.80 : 99,647,621.70 = 18,562,691.80 : x - Step 2: Convert to fraction form
66,431,747.80/99,647,621.70 = 18,562,691.80/x - Step 3: Cross multiply
66,431,747.80x = 99,647,621.70 × 18,562,691.80 - Step 4: Simplify right side
66,431,747.80x = 1,849,728,090,220,092.25 - Step 5: Solve for x
x = 1,849,728,090,220,092.25/66,431,747.80 - Step 6: Final answer
x = 27,844,037.70
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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.