Finding the Fourth Proportional to 81,497.70, 122,246.55 and 68,375.70
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Solution
The fourth proportional to 81,497.70, 122,246.55 and 68,375.70 is: 102,563.55
Step by Step Solution
- Step 1: Write the proportion equation
81,497.70 : 122,246.55 = 68,375.70 : x - Step 2: Convert to fraction form
81,497.70/122,246.55 = 68,375.70/x - Step 3: Cross multiply
81,497.70x = 122,246.55 × 68,375.70 - Step 4: Simplify right side
81,497.70x = 8,358,693,428.84 - Step 5: Solve for x
x = 8,358,693,428.84/81,497.70 - Step 6: Final answer
x = 102,563.55
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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.