Finding the Fourth Proportional to 81,262.95, 121,864.11 and 27,939.84
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Solution
The fourth proportional to 81,262.95, 121,864.11 and 27,939.84 is: 41,899.34
Step by Step Solution
- Step 1: Write the proportion equation
81,262.95 : 121,864.11 = 27,939.84 : x - Step 2: Convert to fraction form
81,262.95/121,864.11 = 27,939.84/x - Step 3: Cross multiply
81,262.95x = 121,864.11 × 27,939.84 - Step 4: Simplify right side
81,262.95x = 3,404,863,735.14 - Step 5: Solve for x
x = 3,404,863,735.14/81,262.95 - Step 6: Final answer
x = 41,899.34
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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.