Finding the Fourth Proportional to 81,530.79, 122,290.71 and 22,361.50
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Solution
The fourth proportional to 81,530.79, 122,290.71 and 22,361.50 is: 33,540.75
Step by Step Solution
- Step 1: Write the proportion equation
81,530.79 : 122,290.71 = 22,361.50 : x - Step 2: Convert to fraction form
81,530.79/122,290.71 = 22,361.50/x - Step 3: Cross multiply
81,530.79x = 122,290.71 × 22,361.50 - Step 4: Simplify right side
81,530.79x = 2,734,603,711.67 - Step 5: Solve for x
x = 2,734,603,711.67/81,530.79 - Step 6: Final answer
x = 33,540.75
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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.