Finding the Fourth Proportional to 81,141.08, 121,721.88 and 27,843.44
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Solution
The fourth proportional to 81,141.08, 121,721.88 and 27,843.44 is: 41,768.68
Step by Step Solution
- Step 1: Write the proportion equation
81,141.08 : 121,721.88 = 27,843.44 : x - Step 2: Convert to fraction form
81,141.08/121,721.88 = 27,843.44/x - Step 3: Cross multiply
81,141.08x = 121,721.88 × 27,843.44 - Step 4: Simplify right side
81,141.08x = 3,389,155,862.47 - Step 5: Solve for x
x = 3,389,155,862.47/81,141.08 - Step 6: Final answer
x = 41,768.68
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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.