Finding the Fourth Proportional to 78,910.44, 118,365.96 and 19,745.94
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Solution
The fourth proportional to 78,910.44, 118,365.96 and 19,745.94 is: 29,618.99
Step by Step Solution
- Step 1: Write the proportion equation
78,910.44 : 118,365.96 = 19,745.94 : x - Step 2: Convert to fraction form
78,910.44/118,365.96 = 19,745.94/x - Step 3: Cross multiply
78,910.44x = 118,365.96 × 19,745.94 - Step 4: Simplify right side
78,910.44x = 2,337,247,144.20 - Step 5: Solve for x
x = 2,337,247,144.20/78,910.44 - Step 6: Final answer
x = 29,618.99
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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.