Finding the Fourth Proportional to 75,636.96, 113,649.09 and 57,091.66
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Solution
The fourth proportional to 75,636.96, 113,649.09 and 57,091.66 is: 85,783.65
Step by Step Solution
- Step 1: Write the proportion equation
75,636.96 : 113,649.09 = 57,091.66 : x - Step 2: Convert to fraction form
75,636.96/113,649.09 = 57,091.66/x - Step 3: Cross multiply
75,636.96x = 113,649.09 × 57,091.66 - Step 4: Simplify right side
75,636.96x = 6,488,414,351.89 - Step 5: Solve for x
x = 6,488,414,351.89/75,636.96 - Step 6: Final answer
x = 85,783.65
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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.