Finding the Fourth Proportional to 86,278.68, 129,418.11 and 27,119.52
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Solution
The fourth proportional to 86,278.68, 129,418.11 and 27,119.52 is: 40,679.31
Step by Step Solution
- Step 1: Write the proportion equation
86,278.68 : 129,418.11 = 27,119.52 : x - Step 2: Convert to fraction form
86,278.68/129,418.11 = 27,119.52/x - Step 3: Cross multiply
86,278.68x = 129,418.11 × 27,119.52 - Step 4: Simplify right side
86,278.68x = 3,509,757,022.51 - Step 5: Solve for x
x = 3,509,757,022.51/86,278.68 - Step 6: Final answer
x = 40,679.31
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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.