Finding the Fourth Proportional to 85,979.24, 128,936.11 and 33,376.49
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Solution
The fourth proportional to 85,979.24, 128,936.11 and 33,376.49 is: 50,052.02
Step by Step Solution
- Step 1: Write the proportion equation
85,979.24 : 128,936.11 = 33,376.49 : x - Step 2: Convert to fraction form
85,979.24/128,936.11 = 33,376.49/x - Step 3: Cross multiply
85,979.24x = 128,936.11 × 33,376.49 - Step 4: Simplify right side
85,979.24x = 4,303,434,786.05 - Step 5: Solve for x
x = 4,303,434,786.05/85,979.24 - Step 6: Final answer
x = 50,052.02
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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.