Finding the Fourth Proportional to 85,542.21, 128,305.06 and 26,361.99
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Solution
The fourth proportional to 85,542.21, 128,305.06 and 26,361.99 is: 39,540.44
Step by Step Solution
- Step 1: Write the proportion equation
85,542.21 : 128,305.06 = 26,361.99 : x - Step 2: Convert to fraction form
85,542.21/128,305.06 = 26,361.99/x - Step 3: Cross multiply
85,542.21x = 128,305.06 × 26,361.99 - Step 4: Simplify right side
85,542.21x = 3,382,376,708.67 - Step 5: Solve for x
x = 3,382,376,708.67/85,542.21 - Step 6: Final answer
x = 39,540.44
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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.