Finding the Fourth Proportional to 68,469.79, 102,743.36 and 36,879.18
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Solution
The fourth proportional to 68,469.79, 102,743.36 and 36,879.18 is: 55,339.60
Step by Step Solution
- Step 1: Write the proportion equation
68,469.79 : 102,743.36 = 36,879.18 : x - Step 2: Convert to fraction form
68,469.79/102,743.36 = 36,879.18/x - Step 3: Cross multiply
68,469.79x = 102,743.36 × 36,879.18 - Step 4: Simplify right side
68,469.79x = 3,789,090,959.44 - Step 5: Solve for x
x = 3,789,090,959.44/68,469.79 - Step 6: Final answer
x = 55,339.60
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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.