Finding the Fourth Proportional to 75,385.62, 113,115.39 and 30,405.09
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Solution
The fourth proportional to 75,385.62, 113,115.39 and 30,405.09 is: 45,622.54
Step by Step Solution
- Step 1: Write the proportion equation
75,385.62 : 113,115.39 = 30,405.09 : x - Step 2: Convert to fraction form
75,385.62/113,115.39 = 30,405.09/x - Step 3: Cross multiply
75,385.62x = 113,115.39 × 30,405.09 - Step 4: Simplify right side
75,385.62x = 3,439,283,613.34 - Step 5: Solve for x
x = 3,439,283,613.34/75,385.62 - Step 6: Final answer
x = 45,622.54
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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.