Finding the Fourth Proportional to 87,743,149.05, 121,211,673.18 and 70,078,859.70
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Solution
The fourth proportional to 87,743,149.05, 121,211,673.18 and 70,078,859.70 is: 96,809,562.12
Step by Step Solution
- Step 1: Write the proportion equation
87,743,149.05 : 121,211,673.18 = 70,078,859.70 : x - Step 2: Convert to fraction form
87,743,149.05/121,211,673.18 = 70,078,859.70/x - Step 3: Cross multiply
87,743,149.05x = 121,211,673.18 × 70,078,859.70 - Step 4: Simplify right side
87,743,149.05x = 8,494,375,838,783,474 - Step 5: Solve for x
x = 8,494,375,838,783,474/87,743,149.05 - Step 6: Final answer
x = 96,809,562.12
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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.