Finding the Fourth Proportional to 73,236.36, 109,780.68 and 28,845.96
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Solution
The fourth proportional to 73,236.36, 109,780.68 and 28,845.96 is: 43,239.85
Step by Step Solution
- Step 1: Write the proportion equation
73,236.36 : 109,780.68 = 28,845.96 : x - Step 2: Convert to fraction form
73,236.36/109,780.68 = 28,845.96/x - Step 3: Cross multiply
73,236.36x = 109,780.68 × 28,845.96 - Step 4: Simplify right side
73,236.36x = 3,166,729,104.05 - Step 5: Solve for x
x = 3,166,729,104.05/73,236.36 - Step 6: Final answer
x = 43,239.85
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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.