Finding the Fourth Proportional to 81,137.08, 121,715.88 and 27,839.44
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Solution
The fourth proportional to 81,137.08, 121,715.88 and 27,839.44 is: 41,762.68
Step by Step Solution
- Step 1: Write the proportion equation
81,137.08 : 121,715.88 = 27,839.44 : x - Step 2: Convert to fraction form
81,137.08/121,715.88 = 27,839.44/x - Step 3: Cross multiply
81,137.08x = 121,715.88 × 27,839.44 - Step 4: Simplify right side
81,137.08x = 3,388,501,938.31 - Step 5: Solve for x
x = 3,388,501,938.31/81,137.08 - Step 6: Final answer
x = 41,762.68
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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.