Finding the Fourth Proportional to 75,212.10, 112,861.35 and 28,469.70
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Solution
The fourth proportional to 75,212.10, 112,861.35 and 28,469.70 is: 42,720.90
Step by Step Solution
- Step 1: Write the proportion equation
75,212.10 : 112,861.35 = 28,469.70 : x - Step 2: Convert to fraction form
75,212.10/112,861.35 = 28,469.70/x - Step 3: Cross multiply
75,212.10x = 112,861.35 × 28,469.70 - Step 4: Simplify right side
75,212.10x = 3,213,128,776.10 - Step 5: Solve for x
x = 3,213,128,776.10/75,212.10 - Step 6: Final answer
x = 42,720.90
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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.