Finding the Fourth Proportional to 81,488.38, 122,201.84 and 34,106.75
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Solution
The fourth proportional to 81,488.38, 122,201.84 and 34,106.75 is: 51,147.27
Step by Step Solution
- Step 1: Write the proportion equation
81,488.38 : 122,201.84 = 34,106.75 : x - Step 2: Convert to fraction form
81,488.38/122,201.84 = 34,106.75/x - Step 3: Cross multiply
81,488.38x = 122,201.84 × 34,106.75 - Step 4: Simplify right side
81,488.38x = 4,167,907,997.19 - Step 5: Solve for x
x = 4,167,907,997.19/81,488.38 - Step 6: Final answer
x = 51,147.27
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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.