Finding the Fourth Proportional to 91,122.24, 125,745.84 and 53,421.60
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Solution
The fourth proportional to 91,122.24, 125,745.84 and 53,421.60 is: 73,720.14
Step by Step Solution
- Step 1: Write the proportion equation
91,122.24 : 125,745.84 = 53,421.60 : x - Step 2: Convert to fraction form
91,122.24/125,745.84 = 53,421.60/x - Step 3: Cross multiply
91,122.24x = 125,745.84 × 53,421.60 - Step 4: Simplify right side
91,122.24x = 6,717,543,966.14 - Step 5: Solve for x
x = 6,717,543,966.14/91,122.24 - Step 6: Final answer
x = 73,720.14
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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.