Finding the Fourth Proportional to 75,639.20, 113,420.80 and 44,059.68
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Solution
The fourth proportional to 75,639.20, 113,420.80 and 44,059.68 is: 66,067.39
Step by Step Solution
- Step 1: Write the proportion equation
75,639.20 : 113,420.80 = 44,059.68 : x - Step 2: Convert to fraction form
75,639.20/113,420.80 = 44,059.68/x - Step 3: Cross multiply
75,639.20x = 113,420.80 × 44,059.68 - Step 4: Simplify right side
75,639.20x = 4,997,284,153.34 - Step 5: Solve for x
x = 4,997,284,153.34/75,639.20 - Step 6: Final answer
x = 66,067.39
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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.