Finding the Fourth Proportional to 91,207,272.87, 125,866,157.90 and 49,391,410.25
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Solution
The fourth proportional to 91,207,272.87, 125,866,157.90 and 49,391,410.25 is: 68,160,211.84
Step by Step Solution
- Step 1: Write the proportion equation
91,207,272.87 : 125,866,157.90 = 49,391,410.25 : x - Step 2: Convert to fraction form
91,207,272.87/125,866,157.90 = 49,391,410.25/x - Step 3: Cross multiply
91,207,272.87x = 125,866,157.90 × 49,391,410.25 - Step 4: Simplify right side
91,207,272.87x = 6,216,707,040,553,890 - Step 5: Solve for x
x = 6,216,707,040,553,890/91,207,272.87 - Step 6: Final answer
x = 68,160,211.84
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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.