Finding the Fourth Proportional to 68,126.21, 102,204.69 and 20,745.54
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Solution
The fourth proportional to 68,126.21, 102,204.69 and 20,745.54 is: 31,122.99
Step by Step Solution
- Step 1: Write the proportion equation
68,126.21 : 102,204.69 = 20,745.54 : x - Step 2: Convert to fraction form
68,126.21/102,204.69 = 20,745.54/x - Step 3: Cross multiply
68,126.21x = 102,204.69 × 20,745.54 - Step 4: Simplify right side
68,126.21x = 2,120,291,484.58 - Step 5: Solve for x
x = 2,120,291,484.58/68,126.21 - Step 6: Final answer
x = 31,122.99
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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.