Finding the Fourth Proportional to 78,658.83, 118,581.20 and 73,584.99
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Solution
The fourth proportional to 78,658.83, 118,581.20 and 73,584.99 is: 110,932.19
Step by Step Solution
- Step 1: Write the proportion equation
78,658.83 : 118,581.20 = 73,584.99 : x - Step 2: Convert to fraction form
78,658.83/118,581.20 = 73,584.99/x - Step 3: Cross multiply
78,658.83x = 118,581.20 × 73,584.99 - Step 4: Simplify right side
78,658.83x = 8,725,796,324.21 - Step 5: Solve for x
x = 8,725,796,324.21/78,658.83 - Step 6: Final answer
x = 110,932.19
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.