Finding the Fourth Proportional to 81,312.99, 121,942.11 and 27,266.73
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Solution
The fourth proportional to 81,312.99, 121,942.11 and 27,266.73 is: 40,890.92
Step by Step Solution
- Step 1: Write the proportion equation
81,312.99 : 121,942.11 = 27,266.73 : x - Step 2: Convert to fraction form
81,312.99/121,942.11 = 27,266.73/x - Step 3: Cross multiply
81,312.99x = 121,942.11 × 27,266.73 - Step 4: Simplify right side
81,312.99x = 3,324,962,589.00 - Step 5: Solve for x
x = 3,324,962,589.00/81,312.99 - Step 6: Final answer
x = 40,890.92
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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.