Finding the Fourth Proportional to 68,631.68, 102,813.43 and 47,280.62
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Solution
The fourth proportional to 68,631.68, 102,813.43 and 47,280.62 is: 70,828.55
Step by Step Solution
- Step 1: Write the proportion equation
68,631.68 : 102,813.43 = 47,280.62 : x - Step 2: Convert to fraction form
68,631.68/102,813.43 = 47,280.62/x - Step 3: Cross multiply
68,631.68x = 102,813.43 × 47,280.62 - Step 4: Simplify right side
68,631.68x = 4,861,082,714.73 - Step 5: Solve for x
x = 4,861,082,714.73/68,631.68 - Step 6: Final answer
x = 70,828.55
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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.