Finding the Fourth Proportional to 87,830.78, 131,786.93 and 27,868.70
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Solution
The fourth proportional to 87,830.78, 131,786.93 and 27,868.70 is: 41,815.99
Step by Step Solution
- Step 1: Write the proportion equation
87,830.78 : 131,786.93 = 27,868.70 : x - Step 2: Convert to fraction form
87,830.78/131,786.93 = 27,868.70/x - Step 3: Cross multiply
87,830.78x = 131,786.93 × 27,868.70 - Step 4: Simplify right side
87,830.78x = 3,672,730,815.23 - Step 5: Solve for x
x = 3,672,730,815.23/87,830.78 - Step 6: Final answer
x = 41,815.99
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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.