Finding the Fourth Proportional to 81,635.44, 122,453.16 and 53,926.96
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Solution
The fourth proportional to 81,635.44, 122,453.16 and 53,926.96 is: 80,890.44
Step by Step Solution
- Step 1: Write the proportion equation
81,635.44 : 122,453.16 = 53,926.96 : x - Step 2: Convert to fraction form
81,635.44/122,453.16 = 53,926.96/x - Step 3: Cross multiply
81,635.44x = 122,453.16 × 53,926.96 - Step 4: Simplify right side
81,635.44x = 6,603,526,661.19 - Step 5: Solve for x
x = 6,603,526,661.19/81,635.44 - Step 6: Final answer
x = 80,890.44
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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.