Finding the Fourth Proportional to 75,446.20, 113,169.30 and 74,279.80
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Solution
The fourth proportional to 75,446.20, 113,169.30 and 74,279.80 is: 111,419.70
Step by Step Solution
- Step 1: Write the proportion equation
75,446.20 : 113,169.30 = 74,279.80 : x - Step 2: Convert to fraction form
75,446.20/113,169.30 = 74,279.80/x - Step 3: Cross multiply
75,446.20x = 113,169.30 × 74,279.80 - Step 4: Simplify right side
75,446.20x = 8,406,192,970.14 - Step 5: Solve for x
x = 8,406,192,970.14/75,446.20 - Step 6: Final answer
x = 111,419.70
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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.