Finding the Fourth Proportional to 68,163.20, 102,259.20 and 20,774.40
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Solution
The fourth proportional to 68,163.20, 102,259.20 and 20,774.40 is: 31,165.99
Step by Step Solution
- Step 1: Write the proportion equation
68,163.20 : 102,259.20 = 20,774.40 : x - Step 2: Convert to fraction form
68,163.20/102,259.20 = 20,774.40/x - Step 3: Cross multiply
68,163.20x = 102,259.20 × 20,774.40 - Step 4: Simplify right side
68,163.20x = 2,124,373,524.48 - Step 5: Solve for x
x = 2,124,373,524.48/68,163.20 - Step 6: Final answer
x = 31,165.99
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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.