Finding the Fourth Proportional to 91,281.53, 136,736.40 and 74,474.44
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Solution
The fourth proportional to 91,281.53, 136,736.40 and 74,474.44 is: 111,559.99
Step by Step Solution
- Step 1: Write the proportion equation
91,281.53 : 136,736.40 = 74,474.44 : x - Step 2: Convert to fraction form
91,281.53/136,736.40 = 74,474.44/x - Step 3: Cross multiply
91,281.53x = 136,736.40 × 74,474.44 - Step 4: Simplify right side
91,281.53x = 10,183,366,755.05 - Step 5: Solve for x
x = 10,183,366,755.05/91,281.53 - Step 6: Final answer
x = 111,559.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.