Finding the Fourth Proportional to 75,939.30, 113,921.09 and 38,484.19
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Solution
The fourth proportional to 75,939.30, 113,921.09 and 38,484.19 is: 57,732.44
Step by Step Solution
- Step 1: Write the proportion equation
75,939.30 : 113,921.09 = 38,484.19 : x - Step 2: Convert to fraction form
75,939.30/113,921.09 = 38,484.19/x - Step 3: Cross multiply
75,939.30x = 113,921.09 × 38,484.19 - Step 4: Simplify right side
75,939.30x = 4,384,160,872.57 - Step 5: Solve for x
x = 4,384,160,872.57/75,939.30 - Step 6: Final answer
x = 57,732.44
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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.