Finding the Fourth Proportional to 79,877.80, 119,816.70 and 71,567.20
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Solution
The fourth proportional to 79,877.80, 119,816.70 and 71,567.20 is: 107,350.80
Step by Step Solution
- Step 1: Write the proportion equation
79,877.80 : 119,816.70 = 71,567.20 : x - Step 2: Convert to fraction form
79,877.80/119,816.70 = 71,567.20/x - Step 3: Cross multiply
79,877.80x = 119,816.70 × 71,567.20 - Step 4: Simplify right side
79,877.80x = 8,574,945,732.24 - Step 5: Solve for x
x = 8,574,945,732.24/79,877.80 - Step 6: Final answer
x = 107,350.80
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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.