Finding the Fourth Proportional to 72,086.61, 108,121.70 and 19,491.99
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Solution
The fourth proportional to 72,086.61, 108,121.70 and 19,491.99 is: 29,235.76
Step by Step Solution
- Step 1: Write the proportion equation
72,086.61 : 108,121.70 = 19,491.99 : x - Step 2: Convert to fraction form
72,086.61/108,121.70 = 19,491.99/x - Step 3: Cross multiply
72,086.61x = 108,121.70 × 19,491.99 - Step 4: Simplify right side
72,086.61x = 2,107,507,095.18 - Step 5: Solve for x
x = 2,107,507,095.18/72,086.61 - Step 6: Final answer
x = 29,235.76
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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.