Finding the Fourth Proportional to 90,121.41, 135,201.18 and 33,960.31
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Solution
The fourth proportional to 90,121.41, 135,201.18 and 33,960.31 is: 50,947.65
Step by Step Solution
- Step 1: Write the proportion equation
90,121.41 : 135,201.18 = 33,960.31 : x - Step 2: Convert to fraction form
90,121.41/135,201.18 = 33,960.31/x - Step 3: Cross multiply
90,121.41x = 135,201.18 × 33,960.31 - Step 4: Simplify right side
90,121.41x = 4,591,474,248.48 - Step 5: Solve for x
x = 4,591,474,248.48/90,121.41 - Step 6: Final answer
x = 50,947.65
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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.