Finding the Fourth Proportional to 71,103.05, 106,660.95 and 18,512.99
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Solution
The fourth proportional to 71,103.05, 106,660.95 and 18,512.99 is: 27,771.14
Step by Step Solution
- Step 1: Write the proportion equation
71,103.05 : 106,660.95 = 18,512.99 : x - Step 2: Convert to fraction form
71,103.05/106,660.95 = 18,512.99/x - Step 3: Cross multiply
71,103.05x = 106,660.95 × 18,512.99 - Step 4: Simplify right side
71,103.05x = 1,974,612,834.09 - Step 5: Solve for x
x = 1,974,612,834.09/71,103.05 - Step 6: Final answer
x = 27,771.14
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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.