Finding the Fourth Proportional to 74,160.21, 111,239.37 and 18,000.75
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Solution
The fourth proportional to 74,160.21, 111,239.37 and 18,000.75 is: 27,000.90
Step by Step Solution
- Step 1: Write the proportion equation
74,160.21 : 111,239.37 = 18,000.75 : x - Step 2: Convert to fraction form
74,160.21/111,239.37 = 18,000.75/x - Step 3: Cross multiply
74,160.21x = 111,239.37 × 18,000.75 - Step 4: Simplify right side
74,160.21x = 2,002,392,089.53 - Step 5: Solve for x
x = 2,002,392,089.53/74,160.21 - Step 6: Final answer
x = 27,000.90
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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.