Finding the Fourth Proportional to 78,728.09, 118,081.04 and 22,572.99
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Solution
The fourth proportional to 78,728.09, 118,081.04 and 22,572.99 is: 33,856.30
Step by Step Solution
- Step 1: Write the proportion equation
78,728.09 : 118,081.04 = 22,572.99 : x - Step 2: Convert to fraction form
78,728.09/118,081.04 = 22,572.99/x - Step 3: Cross multiply
78,728.09x = 118,081.04 × 22,572.99 - Step 4: Simplify right side
78,728.09x = 2,665,442,022.24 - Step 5: Solve for x
x = 2,665,442,022.24/78,728.09 - Step 6: Final answer
x = 33,856.30
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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.