Finding the Fourth Proportional to 79,790.40, 119,701.80 and 27,205.20
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Solution
The fourth proportional to 79,790.40, 119,701.80 and 27,205.20 is: 40,813.32
Step by Step Solution
- Step 1: Write the proportion equation
79,790.40 : 119,701.80 = 27,205.20 : x - Step 2: Convert to fraction form
79,790.40/119,701.80 = 27,205.20/x - Step 3: Cross multiply
79,790.40x = 119,701.80 × 27,205.20 - Step 4: Simplify right side
79,790.40x = 3,256,511,409.36 - Step 5: Solve for x
x = 3,256,511,409.36/79,790.40 - Step 6: Final answer
x = 40,813.32
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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.