Finding the Fourth Proportional to 75,555.80, 113,361.60 and 31,186.40
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Solution
The fourth proportional to 75,555.80, 113,361.60 and 31,186.40 is: 46,791.12
Step by Step Solution
- Step 1: Write the proportion equation
75,555.80 : 113,361.60 = 31,186.40 : x - Step 2: Convert to fraction form
75,555.80/113,361.60 = 31,186.40/x - Step 3: Cross multiply
75,555.80x = 113,361.60 × 31,186.40 - Step 4: Simplify right side
75,555.80x = 3,535,340,202.24 - Step 5: Solve for x
x = 3,535,340,202.24/75,555.80 - Step 6: Final answer
x = 46,791.12
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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.