Finding the Fourth Proportional to 86,821.08, 130,205.97 and 36,899.70
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Solution
The fourth proportional to 86,821.08, 130,205.97 and 36,899.70 is: 55,338.65
Step by Step Solution
- Step 1: Write the proportion equation
86,821.08 : 130,205.97 = 36,899.70 : x - Step 2: Convert to fraction form
86,821.08/130,205.97 = 36,899.70/x - Step 3: Cross multiply
86,821.08x = 130,205.97 × 36,899.70 - Step 4: Simplify right side
86,821.08x = 4,804,561,231.21 - Step 5: Solve for x
x = 4,804,561,231.21/86,821.08 - Step 6: Final answer
x = 55,338.65
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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.