Finding the Fourth Proportional to 90,512.50, 135,768.99 and 28,183.06
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Solution
The fourth proportional to 90,512.50, 135,768.99 and 28,183.06 is: 42,274.66
Step by Step Solution
- Step 1: Write the proportion equation
90,512.50 : 135,768.99 = 28,183.06 : x - Step 2: Convert to fraction form
90,512.50/135,768.99 = 28,183.06/x - Step 3: Cross multiply
90,512.50x = 135,768.99 × 28,183.06 - Step 4: Simplify right side
90,512.50x = 3,826,385,591.31 - Step 5: Solve for x
x = 3,826,385,591.31/90,512.50 - Step 6: Final answer
x = 42,274.66
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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.