Finding the Fourth Proportional to 81,137.42, 121,717.65 and 24,982.20
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Solution
The fourth proportional to 81,137.42, 121,717.65 and 24,982.20 is: 37,476.84
Step by Step Solution
- Step 1: Write the proportion equation
81,137.42 : 121,717.65 = 24,982.20 : x - Step 2: Convert to fraction form
81,137.42/121,717.65 = 24,982.20/x - Step 3: Cross multiply
81,137.42x = 121,717.65 × 24,982.20 - Step 4: Simplify right side
81,137.42x = 3,040,774,067.24 - Step 5: Solve for x
x = 3,040,774,067.24/81,137.42 - Step 6: Final answer
x = 37,476.84
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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.