Finding the Fourth Proportional to 90,361,021.28, 124,699,171.04 and 49,107,912.44
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Solution
The fourth proportional to 90,361,021.28, 124,699,171.04 and 49,107,912.44 is: 67,769,441.80
Step by Step Solution
- Step 1: Write the proportion equation
90,361,021.28 : 124,699,171.04 = 49,107,912.44 : x - Step 2: Convert to fraction form
90,361,021.28/124,699,171.04 = 49,107,912.44/x - Step 3: Cross multiply
90,361,021.28x = 124,699,171.04 × 49,107,912.44 - Step 4: Simplify right side
90,361,021.28x = 6,123,715,972,772,904 - Step 5: Solve for x
x = 6,123,715,972,772,904/90,361,021.28 - Step 6: Final answer
x = 67,769,441.80
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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.