Finding the Fourth Proportional to 81,265.95, 121,868.62 and 27,942.84
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Solution
The fourth proportional to 81,265.95, 121,868.62 and 27,942.84 is: 41,903.84
Step by Step Solution
- Step 1: Write the proportion equation
81,265.95 : 121,868.62 = 27,942.84 : x - Step 2: Convert to fraction form
81,265.95/121,868.62 = 27,942.84/x - Step 3: Cross multiply
81,265.95x = 121,868.62 × 27,942.84 - Step 4: Simplify right side
81,265.95x = 3,405,355,279.82 - Step 5: Solve for x
x = 3,405,355,279.82/81,265.95 - Step 6: Final answer
x = 41,903.84
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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.