Finding the Fourth Proportional to 81,021.88, 121,575.50 and 41,578.99
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Solution
The fourth proportional to 81,021.88, 121,575.50 and 41,578.99 is: 62,390.39
Step by Step Solution
- Step 1: Write the proportion equation
81,021.88 : 121,575.50 = 41,578.99 : x - Step 2: Convert to fraction form
81,021.88/121,575.50 = 41,578.99/x - Step 3: Cross multiply
81,021.88x = 121,575.50 × 41,578.99 - Step 4: Simplify right side
81,021.88x = 5,054,986,498.75 - Step 5: Solve for x
x = 5,054,986,498.75/81,021.88 - Step 6: Final answer
x = 62,390.39
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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.