Finding the Fourth Proportional to 75,622.40, 113,433.60 and 57,907.70
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Solution
The fourth proportional to 75,622.40, 113,433.60 and 57,907.70 is: 86,861.55
Step by Step Solution
- Step 1: Write the proportion equation
75,622.40 : 113,433.60 = 57,907.70 : x - Step 2: Convert to fraction form
75,622.40/113,433.60 = 57,907.70/x - Step 3: Cross multiply
75,622.40x = 113,433.60 × 57,907.70 - Step 4: Simplify right side
75,622.40x = 6,568,678,878.72 - Step 5: Solve for x
x = 6,568,678,878.72/75,622.40 - Step 6: Final answer
x = 86,861.55
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1.5x scale
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.