Finding the Fourth Proportional to 115,012.26, 158,715.18 and 66,620.70
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Solution
The fourth proportional to 115,012.26, 158,715.18 and 66,620.70 is: 91,935.56
Step by Step Solution
- Step 1: Write the proportion equation
115,012.26 : 158,715.18 = 66,620.70 : x - Step 2: Convert to fraction form
115,012.26/158,715.18 = 66,620.70/x - Step 3: Cross multiply
115,012.26x = 158,715.18 × 66,620.70 - Step 4: Simplify right side
115,012.26x = 10,573,716,392.23 - Step 5: Solve for x
x = 10,573,716,392.23/115,012.26 - Step 6: Final answer
x = 91,935.56
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.