Finding the Fourth Proportional to 75,631.20, 113,331.60 and 63,880.80
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Solution
The fourth proportional to 75,631.20, 113,331.60 and 63,880.80 is: 95,723.90
Step by Step Solution
- Step 1: Write the proportion equation
75,631.20 : 113,331.60 = 63,880.80 : x - Step 2: Convert to fraction form
75,631.20/113,331.60 = 63,880.80/x - Step 3: Cross multiply
75,631.20x = 113,331.60 × 63,880.80 - Step 4: Simplify right side
75,631.20x = 7,239,713,273.28 - Step 5: Solve for x
x = 7,239,713,273.28/75,631.20 - Step 6: Final answer
x = 95,723.90
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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.