Finding the Fourth Proportional to 87,144,369.75, 120,259,229.99 and 47,986,053.21
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Solution
The fourth proportional to 87,144,369.75, 120,259,229.99 and 47,986,053.21 is: 66,220,753.28
Step by Step Solution
- Step 1: Write the proportion equation
87,144,369.75 : 120,259,229.99 = 47,986,053.21 : x - Step 2: Convert to fraction form
87,144,369.75/120,259,229.99 = 47,986,053.21/x - Step 3: Cross multiply
87,144,369.75x = 120,259,229.99 × 47,986,053.21 - Step 4: Simplify right side
87,144,369.75x = 5,770,765,809,053,838 - Step 5: Solve for x
x = 5,770,765,809,053,838/87,144,369.75 - Step 6: Final answer
x = 66,220,753.28
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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.