Finding the Fourth Proportional to 68,745.80, 103,118.70 and 53,193.80
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Solution
The fourth proportional to 68,745.80, 103,118.70 and 53,193.80 is: 79,790.70
Step by Step Solution
- Step 1: Write the proportion equation
68,745.80 : 103,118.70 = 53,193.80 : x - Step 2: Convert to fraction form
68,745.80/103,118.70 = 53,193.80/x - Step 3: Cross multiply
68,745.80x = 103,118.70 × 53,193.80 - Step 4: Simplify right side
68,745.80x = 5,485,275,504.06 - Step 5: Solve for x
x = 5,485,275,504.06/68,745.80 - Step 6: Final answer
x = 79,790.70
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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.