Finding the Fourth Proportional to 81,868.75, 122,842.01 and 26,464.75
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Solution
The fourth proportional to 81,868.75, 122,842.01 and 26,464.75 is: 39,709.69
Step by Step Solution
- Step 1: Write the proportion equation
81,868.75 : 122,842.01 = 26,464.75 : x - Step 2: Convert to fraction form
81,868.75/122,842.01 = 26,464.75/x - Step 3: Cross multiply
81,868.75x = 122,842.01 × 26,464.75 - Step 4: Simplify right side
81,868.75x = 3,250,983,084.15 - Step 5: Solve for x
x = 3,250,983,084.15/81,868.75 - Step 6: Final answer
x = 39,709.69
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1.5x scale
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.