Finding the Fourth Proportional to 81,556.58, 122,293.35 and 31,650.99
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Solution
The fourth proportional to 81,556.58, 122,293.35 and 31,650.99 is: 47,460.37
Step by Step Solution
- Step 1: Write the proportion equation
81,556.58 : 122,293.35 = 31,650.99 : x - Step 2: Convert to fraction form
81,556.58/122,293.35 = 31,650.99/x - Step 3: Cross multiply
81,556.58x = 122,293.35 × 31,650.99 - Step 4: Simplify right side
81,556.58x = 3,870,705,597.92 - Step 5: Solve for x
x = 3,870,705,597.92/81,556.58 - Step 6: Final answer
x = 47,460.37
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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.