Finding the Fourth Proportional to 19,981,142.70, 29,971,714.05 and 5,606,647.80
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Solution
The fourth proportional to 19,981,142.70, 29,971,714.05 and 5,606,647.80 is: 8,409,971.70
Step by Step Solution
- Step 1: Write the proportion equation
19,981,142.70 : 29,971,714.05 = 5,606,647.80 : x - Step 2: Convert to fraction form
19,981,142.70/29,971,714.05 = 5,606,647.80/x - Step 3: Cross multiply
19,981,142.70x = 29,971,714.05 × 5,606,647.80 - Step 4: Simplify right side
19,981,142.70x = 168,040,844,640,661.59 - Step 5: Solve for x
x = 168,040,844,640,661.59/19,981,142.70 - Step 6: Final answer
x = 8,409,971.70
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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.