Finding the Fourth Proportional to 87,913.63, 131,868.60 and 21,354.09
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Solution
The fourth proportional to 87,913.63, 131,868.60 and 21,354.09 is: 32,030.68
Step by Step Solution
- Step 1: Write the proportion equation
87,913.63 : 131,868.60 = 21,354.09 : x - Step 2: Convert to fraction form
87,913.63/131,868.60 = 21,354.09/x - Step 3: Cross multiply
87,913.63x = 131,868.60 × 21,354.09 - Step 4: Simplify right side
87,913.63x = 2,815,933,293.23 - Step 5: Solve for x
x = 2,815,933,293.23/87,913.63 - Step 6: Final answer
x = 32,030.68
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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.