Finding the Fourth Proportional to 90,361.14, 124,745.58 and 70,172.70
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Solution
The fourth proportional to 90,361.14, 124,745.58 and 70,172.70 is: 96,874.99
Step by Step Solution
- Step 1: Write the proportion equation
90,361.14 : 124,745.58 = 70,172.70 : x - Step 2: Convert to fraction form
90,361.14/124,745.58 = 70,172.70/x - Step 3: Cross multiply
90,361.14x = 124,745.58 × 70,172.70 - Step 4: Simplify right side
90,361.14x = 8,753,734,161.67 - Step 5: Solve for x
x = 8,753,734,161.67/90,361.14 - Step 6: Final answer
x = 96,874.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.