Finding the Fourth Proportional to 81,239.57, 121,824.50 and 27,936.92
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Solution
The fourth proportional to 81,239.57, 121,824.50 and 27,936.92 is: 41,893.39
Step by Step Solution
- Step 1: Write the proportion equation
81,239.57 : 121,824.50 = 27,936.92 : x - Step 2: Convert to fraction form
81,239.57/121,824.50 = 27,936.92/x - Step 3: Cross multiply
81,239.57x = 121,824.50 × 27,936.92 - Step 4: Simplify right side
81,239.57x = 3,403,400,561.73 - Step 5: Solve for x
x = 3,403,400,561.73/81,239.57 - Step 6: Final answer
x = 41,893.39
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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.