Finding the Fourth Proportional to 90,434.48, 135,657.84 and 33,513.68
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Solution
The fourth proportional to 90,434.48, 135,657.84 and 33,513.68 is: 50,272.79
Step by Step Solution
- Step 1: Write the proportion equation
90,434.48 : 135,657.84 = 33,513.68 : x - Step 2: Convert to fraction form
90,434.48/135,657.84 = 33,513.68/x - Step 3: Cross multiply
90,434.48x = 135,657.84 × 33,513.68 - Step 4: Simplify right side
90,434.48x = 4,546,393,439.25 - Step 5: Solve for x
x = 4,546,393,439.25/90,434.48 - Step 6: Final answer
x = 50,272.79
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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.