Finding the Fourth Proportional to 82,976.09, 124,464.58 and 20,646.59
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Solution
The fourth proportional to 82,976.09, 124,464.58 and 20,646.59 is: 30,969.99
Step by Step Solution
- Step 1: Write the proportion equation
82,976.09 : 124,464.58 = 20,646.59 : x - Step 2: Convert to fraction form
82,976.09/124,464.58 = 20,646.59/x - Step 3: Cross multiply
82,976.09x = 124,464.58 × 20,646.59 - Step 4: Simplify right side
82,976.09x = 2,569,768,478.84 - Step 5: Solve for x
x = 2,569,768,478.84/82,976.09 - Step 6: Final answer
x = 30,969.99
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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.