Finding the Fourth Proportional to 71,497.80, 107,246.70 and 18,912.60
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Solution
The fourth proportional to 71,497.80, 107,246.70 and 18,912.60 is: 28,368.90
Step by Step Solution
- Step 1: Write the proportion equation
71,497.80 : 107,246.70 = 18,912.60 : x - Step 2: Convert to fraction form
71,497.80/107,246.70 = 18,912.60/x - Step 3: Cross multiply
71,497.80x = 107,246.70 × 18,912.60 - Step 4: Simplify right side
71,497.80x = 2,028,313,938.42 - Step 5: Solve for x
x = 2,028,313,938.42/71,497.80 - Step 6: Final answer
x = 28,368.90
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1.5x scale
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.