Finding the Fourth Proportional to 115,578.20, 173,399.70 and 56,415.80
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Solution
The fourth proportional to 115,578.20, 173,399.70 and 56,415.80 is: 84,639.52
Step by Step Solution
- Step 1: Write the proportion equation
115,578.20 : 173,399.70 = 56,415.80 : x - Step 2: Convert to fraction form
115,578.20/173,399.70 = 56,415.80/x - Step 3: Cross multiply
115,578.20x = 173,399.70 × 56,415.80 - Step 4: Simplify right side
115,578.20x = 9,782,482,795.26 - Step 5: Solve for x
x = 9,782,482,795.26/115,578.20 - Step 6: Final answer
x = 84,639.52
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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.