Finding the Fourth Proportional to 82,629.55, 113,986.80 and 53,965.99
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Solution
The fourth proportional to 82,629.55, 113,986.80 and 53,965.99 is: 74,445.65
Step by Step Solution
- Step 1: Write the proportion equation
82,629.55 : 113,986.80 = 53,965.99 : x - Step 2: Convert to fraction form
82,629.55/113,986.80 = 53,965.99/x - Step 3: Cross multiply
82,629.55x = 113,986.80 × 53,965.99 - Step 4: Simplify right side
82,629.55x = 6,151,410,508.93 - Step 5: Solve for x
x = 6,151,410,508.93/82,629.55 - Step 6: Final answer
x = 74,445.65
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.