Finding the Fourth Proportional to 91,115.78, 125,745.36 and 50,829.62
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Solution
The fourth proportional to 91,115.78, 125,745.36 and 50,829.62 is: 70,147.99
Step by Step Solution
- Step 1: Write the proportion equation
91,115.78 : 125,745.36 = 50,829.62 : x - Step 2: Convert to fraction form
91,115.78/125,745.36 = 50,829.62/x - Step 3: Cross multiply
91,115.78x = 125,745.36 × 50,829.62 - Step 4: Simplify right side
91,115.78x = 6,391,588,865.56 - Step 5: Solve for x
x = 6,391,588,865.56/91,115.78 - Step 6: Final answer
x = 70,147.99
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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.