Finding the Fourth Proportional to 90,394.44, 135,378.36 and 45,910.88
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Solution
The fourth proportional to 90,394.44, 135,378.36 and 45,910.88 is: 68,757.99
Step by Step Solution
- Step 1: Write the proportion equation
90,394.44 : 135,378.36 = 45,910.88 : x - Step 2: Convert to fraction form
90,394.44/135,378.36 = 45,910.88/x - Step 3: Cross multiply
90,394.44x = 135,378.36 × 45,910.88 - Step 4: Simplify right side
90,394.44x = 6,215,339,640.56 - Step 5: Solve for x
x = 6,215,339,640.56/90,394.44 - Step 6: Final answer
x = 68,757.99
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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.