Finding the Fourth Proportional to 83,780.21, 125,732.69 and 33,860.79
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Solution
The fourth proportional to 83,780.21, 125,732.69 and 33,860.79 is: 50,816.40
Step by Step Solution
- Step 1: Write the proportion equation
83,780.21 : 125,732.69 = 33,860.79 : x - Step 2: Convert to fraction form
83,780.21/125,732.69 = 33,860.79/x - Step 3: Cross multiply
83,780.21x = 125,732.69 × 33,860.79 - Step 4: Simplify right side
83,780.21x = 4,257,408,042.92 - Step 5: Solve for x
x = 4,257,408,042.92/83,780.21 - Step 6: Final answer
x = 50,816.40
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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.