Finding the Fourth Proportional to 86,621.70, 129,921.60 and 27,457.95
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Solution
The fourth proportional to 86,621.70, 129,921.60 and 27,457.95 is: 41,183.45
Step by Step Solution
- Step 1: Write the proportion equation
86,621.70 : 129,921.60 = 27,457.95 : x - Step 2: Convert to fraction form
86,621.70/129,921.60 = 27,457.95/x - Step 3: Cross multiply
86,621.70x = 129,921.60 × 27,457.95 - Step 4: Simplify right side
86,621.70x = 3,567,380,796.72 - Step 5: Solve for x
x = 3,567,380,796.72/86,621.70 - Step 6: Final answer
x = 41,183.45
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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.