Finding the Fourth Proportional to 82,959.20, 124,438.80 and 27,555.20
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Solution
The fourth proportional to 82,959.20, 124,438.80 and 27,555.20 is: 41,332.80
Step by Step Solution
- Step 1: Write the proportion equation
82,959.20 : 124,438.80 = 27,555.20 : x - Step 2: Convert to fraction form
82,959.20/124,438.80 = 27,555.20/x - Step 3: Cross multiply
82,959.20x = 124,438.80 × 27,555.20 - Step 4: Simplify right side
82,959.20x = 3,428,936,021.76 - Step 5: Solve for x
x = 3,428,936,021.76/82,959.20 - Step 6: Final answer
x = 41,332.80
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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.