Finding the Fourth Proportional to 91,183.26, 136,770.80 and 28,000.83
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Solution
The fourth proportional to 91,183.26, 136,770.80 and 28,000.83 is: 41,999.99
Step by Step Solution
- Step 1: Write the proportion equation
91,183.26 : 136,770.80 = 28,000.83 : x - Step 2: Convert to fraction form
91,183.26/136,770.80 = 28,000.83/x - Step 3: Cross multiply
91,183.26x = 136,770.80 × 28,000.83 - Step 4: Simplify right side
91,183.26x = 3,829,695,779.76 - Step 5: Solve for x
x = 3,829,695,779.76/91,183.26 - Step 6: Final answer
x = 41,999.99
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1.5x scale
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.