Finding the Fourth Proportional to 87,841.94, 131,894.12 and 86,529.74
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Solution
The fourth proportional to 87,841.94, 131,894.12 and 86,529.74 is: 129,923.86
Step by Step Solution
- Step 1: Write the proportion equation
87,841.94 : 131,894.12 = 86,529.74 : x - Step 2: Convert to fraction form
87,841.94/131,894.12 = 86,529.74/x - Step 3: Cross multiply
87,841.94x = 131,894.12 × 86,529.74 - Step 4: Simplify right side
87,841.94x = 11,412,763,911.13 - Step 5: Solve for x
x = 11,412,763,911.13/87,841.94 - Step 6: Final answer
x = 129,923.86
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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.