Finding the Fourth Proportional to 80,267.71, 120,391.98 and 21,107.99
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Solution
The fourth proportional to 80,267.71, 120,391.98 and 21,107.99 is: 31,659.46
Step by Step Solution
- Step 1: Write the proportion equation
80,267.71 : 120,391.98 = 21,107.99 : x - Step 2: Convert to fraction form
80,267.71/120,391.98 = 21,107.99/x - Step 3: Cross multiply
80,267.71x = 120,391.98 × 21,107.99 - Step 4: Simplify right side
80,267.71x = 2,541,232,028.81 - Step 5: Solve for x
x = 2,541,232,028.81/80,267.71 - Step 6: Final answer
x = 31,659.46
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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.