Finding the Fourth Proportional to 74,658.67, 111,920.76 and 27,240.66
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Solution
The fourth proportional to 74,658.67, 111,920.76 and 27,240.66 is: 40,836.45
Step by Step Solution
- Step 1: Write the proportion equation
74,658.67 : 111,920.76 = 27,240.66 : x - Step 2: Convert to fraction form
74,658.67/111,920.76 = 27,240.66/x - Step 3: Cross multiply
74,658.67x = 111,920.76 × 27,240.66 - Step 4: Simplify right side
74,658.67x = 3,048,795,370.10 - Step 5: Solve for x
x = 3,048,795,370.10/74,658.67 - Step 6: Final answer
x = 40,836.45
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1.5x scale
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.