Finding the Fourth Proportional to 78,324.20, 108,143.58 and 48,149.99
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Solution
The fourth proportional to 78,324.20, 108,143.58 and 48,149.99 is: 66,481.53
Step by Step Solution
- Step 1: Write the proportion equation
78,324.20 : 108,143.58 = 48,149.99 : x - Step 2: Convert to fraction form
78,324.20/108,143.58 = 48,149.99/x - Step 3: Cross multiply
78,324.20x = 108,143.58 × 48,149.99 - Step 4: Simplify right side
78,324.20x = 5,207,112,295.56 - Step 5: Solve for x
x = 5,207,112,295.56/78,324.20 - Step 6: Final answer
x = 66,481.53
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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.