Finding the Fourth Proportional to 79,193.13, 109,286.49 and 43,383.09
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Solution
The fourth proportional to 79,193.13, 109,286.49 and 43,383.09 is: 59,868.65
Step by Step Solution
- Step 1: Write the proportion equation
79,193.13 : 109,286.49 = 43,383.09 : x - Step 2: Convert to fraction form
79,193.13/109,286.49 = 43,383.09/x - Step 3: Cross multiply
79,193.13x = 109,286.49 × 43,383.09 - Step 4: Simplify right side
79,193.13x = 4,741,185,631.45 - Step 5: Solve for x
x = 4,741,185,631.45/79,193.13 - Step 6: Final answer
x = 59,868.65
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.