Finding the Fourth Proportional to 81,453.53, 122,141.96 and 31,556.99
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Solution
The fourth proportional to 81,453.53, 122,141.96 and 31,556.99 is: 47,320.63
Step by Step Solution
- Step 1: Write the proportion equation
81,453.53 : 122,141.96 = 31,556.99 : x - Step 2: Convert to fraction form
81,453.53/122,141.96 = 31,556.99/x - Step 3: Cross multiply
81,453.53x = 122,141.96 × 31,556.99 - Step 4: Simplify right side
81,453.53x = 3,854,432,452.52 - Step 5: Solve for x
x = 3,854,432,452.52/81,453.53 - Step 6: Final answer
x = 47,320.63
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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.