Finding the Fourth Proportional to 79,438.73, 119,157.99 and 20,274.41
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Solution
The fourth proportional to 79,438.73, 119,157.99 and 20,274.41 is: 30,411.58
Step by Step Solution
- Step 1: Write the proportion equation
79,438.73 : 119,157.99 = 20,274.41 : x - Step 2: Convert to fraction form
79,438.73/119,157.99 = 20,274.41/x - Step 3: Cross multiply
79,438.73x = 119,157.99 × 20,274.41 - Step 4: Simplify right side
79,438.73x = 2,415,857,348.25 - Step 5: Solve for x
x = 2,415,857,348.25/79,438.73 - Step 6: Final answer
x = 30,411.58
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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.