Finding the Fourth Proportional to 68,576.81, 102,815.78 and 31,118.09
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Solution
The fourth proportional to 68,576.81, 102,815.78 and 31,118.09 is: 46,654.70
Step by Step Solution
- Step 1: Write the proportion equation
68,576.81 : 102,815.78 = 31,118.09 : x - Step 2: Convert to fraction form
68,576.81/102,815.78 = 31,118.09/x - Step 3: Cross multiply
68,576.81x = 102,815.78 × 31,118.09 - Step 4: Simplify right side
68,576.81x = 3,199,430,025.79 - Step 5: Solve for x
x = 3,199,430,025.79/68,576.81 - Step 6: Final answer
x = 46,654.70
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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.