Finding the Fourth Proportional to 91,188.61, 125,842.41 and 57,198.54
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Solution
The fourth proportional to 91,188.61, 125,842.41 and 57,198.54 is: 78,935.32
Step by Step Solution
- Step 1: Write the proportion equation
91,188.61 : 125,842.41 = 57,198.54 : x - Step 2: Convert to fraction form
91,188.61/125,842.41 = 57,198.54/x - Step 3: Cross multiply
91,188.61x = 125,842.41 × 57,198.54 - Step 4: Simplify right side
91,188.61x = 7,198,002,122.08 - Step 5: Solve for x
x = 7,198,002,122.08/91,188.61 - Step 6: Final answer
x = 78,935.32
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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.