Finding the Fourth Proportional to 74,023.70, 102,147.09 and 40,489.70
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Solution
The fourth proportional to 74,023.70, 102,147.09 and 40,489.70 is: 55,872.71
Step by Step Solution
- Step 1: Write the proportion equation
74,023.70 : 102,147.09 = 40,489.70 : x - Step 2: Convert to fraction form
74,023.70/102,147.09 = 40,489.70/x - Step 3: Cross multiply
74,023.70x = 102,147.09 × 40,489.70 - Step 4: Simplify right side
74,023.70x = 4,135,905,029.97 - Step 5: Solve for x
x = 4,135,905,029.97/74,023.70 - Step 6: Final answer
x = 55,872.71
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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.