Finding the Fourth Proportional to 74,231.58, 111,325.59 and 20,919.99
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Solution
The fourth proportional to 74,231.58, 111,325.59 and 20,919.99 is: 31,373.85
Step by Step Solution
- Step 1: Write the proportion equation
74,231.58 : 111,325.59 = 20,919.99 : x - Step 2: Convert to fraction form
74,231.58/111,325.59 = 20,919.99/x - Step 3: Cross multiply
74,231.58x = 111,325.59 × 20,919.99 - Step 4: Simplify right side
74,231.58x = 2,328,930,229.54 - Step 5: Solve for x
x = 2,328,930,229.54/74,231.58 - Step 6: Final answer
x = 31,373.85
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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.