Finding the Fourth Proportional to 68,846.18, 103,271.81 and 18,930.20
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Solution
The fourth proportional to 68,846.18, 103,271.81 and 18,930.20 is: 28,395.99
Step by Step Solution
- Step 1: Write the proportion equation
68,846.18 : 103,271.81 = 18,930.20 : x - Step 2: Convert to fraction form
68,846.18/103,271.81 = 18,930.20/x - Step 3: Cross multiply
68,846.18x = 103,271.81 × 18,930.20 - Step 4: Simplify right side
68,846.18x = 1,954,955,406.65 - Step 5: Solve for x
x = 1,954,955,406.65/68,846.18 - Step 6: Final answer
x = 28,395.99
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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.