Finding the Fourth Proportional to 75,274.20, 112,911.30 and 74,107.80
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Solution
The fourth proportional to 75,274.20, 112,911.30 and 74,107.80 is: 111,161.70
Step by Step Solution
- Step 1: Write the proportion equation
75,274.20 : 112,911.30 = 74,107.80 : x - Step 2: Convert to fraction form
75,274.20/112,911.30 = 74,107.80/x - Step 3: Cross multiply
75,274.20x = 112,911.30 × 74,107.80 - Step 4: Simplify right side
75,274.20x = 8,367,608,038.14 - Step 5: Solve for x
x = 8,367,608,038.14/75,274.20 - Step 6: Final answer
x = 111,161.70
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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.