Finding the Fourth Proportional to 87,329.48, 131,005.28 and 28,163.84
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Solution
The fourth proportional to 87,329.48, 131,005.28 and 28,163.84 is: 42,249.33
Step by Step Solution
- Step 1: Write the proportion equation
87,329.48 : 131,005.28 = 28,163.84 : x - Step 2: Convert to fraction form
87,329.48/131,005.28 = 28,163.84/x - Step 3: Cross multiply
87,329.48x = 131,005.28 × 28,163.84 - Step 4: Simplify right side
87,329.48x = 3,689,611,745.08 - Step 5: Solve for x
x = 3,689,611,745.08/87,329.48 - Step 6: Final answer
x = 42,249.33
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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.