Finding the Fourth Proportional to 86,178.75, 129,268.16 and 27,019.03
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Solution
The fourth proportional to 86,178.75, 129,268.16 and 27,019.03 is: 40,528.56
Step by Step Solution
- Step 1: Write the proportion equation
86,178.75 : 129,268.16 = 27,019.03 : x - Step 2: Convert to fraction form
86,178.75/129,268.16 = 27,019.03/x - Step 3: Cross multiply
86,178.75x = 129,268.16 × 27,019.03 - Step 4: Simplify right side
86,178.75x = 3,492,700,896.05 - Step 5: Solve for x
x = 3,492,700,896.05/86,178.75 - Step 6: Final answer
x = 40,528.56
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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.