Finding the Fourth Proportional to 81,758.65, 122,685.27 and 34,369.99
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Solution
The fourth proportional to 81,758.65, 122,685.27 and 34,369.99 is: 51,574.87
Step by Step Solution
- Step 1: Write the proportion equation
81,758.65 : 122,685.27 = 34,369.99 : x - Step 2: Convert to fraction form
81,758.65/122,685.27 = 34,369.99/x - Step 3: Cross multiply
81,758.65x = 122,685.27 × 34,369.99 - Step 4: Simplify right side
81,758.65x = 4,216,691,503.05 - Step 5: Solve for x
x = 4,216,691,503.05/81,758.65 - Step 6: Final answer
x = 51,574.87
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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.