Finding the Fourth Proportional to 87,857.36, 131,784.87 and 21,298.08
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Solution
The fourth proportional to 87,857.36, 131,784.87 and 21,298.08 is: 31,946.84
Step by Step Solution
- Step 1: Write the proportion equation
87,857.36 : 131,784.87 = 21,298.08 : x - Step 2: Convert to fraction form
87,857.36/131,784.87 = 21,298.08/x - Step 3: Cross multiply
87,857.36x = 131,784.87 × 21,298.08 - Step 4: Simplify right side
87,857.36x = 2,806,764,704.05 - Step 5: Solve for x
x = 2,806,764,704.05/87,857.36 - Step 6: Final answer
x = 31,946.84
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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.