Finding the Fourth Proportional to 86,629.05, 129,992.18 and 36,700.65
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Solution
The fourth proportional to 86,629.05, 129,992.18 and 36,700.65 is: 55,071.56
Step by Step Solution
- Step 1: Write the proportion equation
86,629.05 : 129,992.18 = 36,700.65 : x - Step 2: Convert to fraction form
86,629.05/129,992.18 = 36,700.65/x - Step 3: Cross multiply
86,629.05x = 129,992.18 × 36,700.65 - Step 4: Simplify right side
86,629.05x = 4,770,797,317.41 - Step 5: Solve for x
x = 4,770,797,317.41/86,629.05 - Step 6: Final answer
x = 55,071.56
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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.