Finding the Fourth Proportional to 115,769.80, 173,657.74 and 31,530.68
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Solution
The fourth proportional to 115,769.80, 173,657.74 and 31,530.68 is: 47,296.85
Step by Step Solution
- Step 1: Write the proportion equation
115,769.80 : 173,657.74 = 31,530.68 : x - Step 2: Convert to fraction form
115,769.80/173,657.74 = 31,530.68/x - Step 3: Cross multiply
115,769.80x = 173,657.74 × 31,530.68 - Step 4: Simplify right side
115,769.80x = 5,475,546,629.46 - Step 5: Solve for x
x = 5,475,546,629.46/115,769.80 - Step 6: Final answer
x = 47,296.85
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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.