Finding the Fourth Proportional to 85,703,728.09, 118,278,438.86 and 48,540,619.38
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Solution
The fourth proportional to 85,703,728.09, 118,278,438.86 and 48,540,619.38 is: 66,990,185.95
Step by Step Solution
- Step 1: Write the proportion equation
85,703,728.09 : 118,278,438.86 = 48,540,619.38 : x - Step 2: Convert to fraction form
85,703,728.09/118,278,438.86 = 48,540,619.38/x - Step 3: Cross multiply
85,703,728.09x = 118,278,438.86 × 48,540,619.38 - Step 4: Simplify right side
85,703,728.09x = 5,741,308,681,563,861 - Step 5: Solve for x
x = 5,741,308,681,563,861/85,703,728.09 - Step 6: Final answer
x = 66,990,185.95
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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.