Finding the Fourth Proportional to 90,213.76, 135,337.56 and 27,869.68
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Solution
The fourth proportional to 90,213.76, 135,337.56 and 27,869.68 is: 41,809.75
Step by Step Solution
- Step 1: Write the proportion equation
90,213.76 : 135,337.56 = 27,869.68 : x - Step 2: Convert to fraction form
90,213.76/135,337.56 = 27,869.68/x - Step 3: Cross multiply
90,213.76x = 135,337.56 × 27,869.68 - Step 4: Simplify right side
90,213.76x = 3,771,814,489.18 - Step 5: Solve for x
x = 3,771,814,489.18/90,213.76 - Step 6: Final answer
x = 41,809.75
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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.