Finding the Fourth Proportional to 80,786.97, 121,125.78 and 28,167.75
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Solution
The fourth proportional to 80,786.97, 121,125.78 and 28,167.75 is: 42,232.56
Step by Step Solution
- Step 1: Write the proportion equation
80,786.97 : 121,125.78 = 28,167.75 : x - Step 2: Convert to fraction form
80,786.97/121,125.78 = 28,167.75/x - Step 3: Cross multiply
80,786.97x = 121,125.78 × 28,167.75 - Step 4: Simplify right side
80,786.97x = 3,411,840,689.60 - Step 5: Solve for x
x = 3,411,840,689.60/80,786.97 - Step 6: Final answer
x = 42,232.56
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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.