Finding the Fourth Proportional to 80,761.84, 121,067.88 and 74,117.68
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Solution
The fourth proportional to 80,761.84, 121,067.88 and 74,117.68 is: 111,107.80
Step by Step Solution
- Step 1: Write the proportion equation
80,761.84 : 121,067.88 = 74,117.68 : x - Step 2: Convert to fraction form
80,761.84/121,067.88 = 74,117.68/x - Step 3: Cross multiply
80,761.84x = 121,067.88 × 74,117.68 - Step 4: Simplify right side
80,761.84x = 8,973,270,388.12 - Step 5: Solve for x
x = 8,973,270,388.12/80,761.84 - Step 6: Final answer
x = 111,107.80
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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.