Finding the Fourth Proportional to 73,163.28, 109,735.20 and 20,578.08
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Solution
The fourth proportional to 73,163.28, 109,735.20 and 20,578.08 is: 30,864.39
Step by Step Solution
- Step 1: Write the proportion equation
73,163.28 : 109,735.20 = 20,578.08 : x - Step 2: Convert to fraction form
73,163.28/109,735.20 = 20,578.08/x - Step 3: Cross multiply
73,163.28x = 109,735.20 × 20,578.08 - Step 4: Simplify right side
73,163.28x = 2,258,139,724.42 - Step 5: Solve for x
x = 2,258,139,724.42/73,163.28 - Step 6: Final answer
x = 30,864.39
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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.