Finding the Fourth Proportional to 71,329.11, 106,993.41 and 21,408.99
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Solution
The fourth proportional to 71,329.11, 106,993.41 and 21,408.99 is: 32,113.41
Step by Step Solution
- Step 1: Write the proportion equation
71,329.11 : 106,993.41 = 21,408.99 : x - Step 2: Convert to fraction form
71,329.11/106,993.41 = 21,408.99/x - Step 3: Cross multiply
71,329.11x = 106,993.41 × 21,408.99 - Step 4: Simplify right side
71,329.11x = 2,290,620,844.76 - Step 5: Solve for x
x = 2,290,620,844.76/71,329.11 - Step 6: Final answer
x = 32,113.41
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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.