Finding the Fourth Proportional to 81,205.35, 121,777.68 and 27,882.19
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Solution
The fourth proportional to 81,205.35, 121,777.68 and 27,882.19 is: 41,812.87
Step by Step Solution
- Step 1: Write the proportion equation
81,205.35 : 121,777.68 = 27,882.19 : x - Step 2: Convert to fraction form
81,205.35/121,777.68 = 27,882.19/x - Step 3: Cross multiply
81,205.35x = 121,777.68 × 27,882.19 - Step 4: Simplify right side
81,205.35x = 3,395,428,411.52 - Step 5: Solve for x
x = 3,395,428,411.52/81,205.35 - Step 6: Final answer
x = 41,812.87
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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.