Finding the Fourth Proportional to 87,438.72, 120,648.24 and 51,639.96
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Solution
The fourth proportional to 87,438.72, 120,648.24 and 51,639.96 is: 71,252.99
Step by Step Solution
- Step 1: Write the proportion equation
87,438.72 : 120,648.24 = 51,639.96 : x - Step 2: Convert to fraction form
87,438.72/120,648.24 = 51,639.96/x - Step 3: Cross multiply
87,438.72x = 120,648.24 × 51,639.96 - Step 4: Simplify right side
87,438.72x = 6,230,270,287.67 - Step 5: Solve for x
x = 6,230,270,287.67/87,438.72 - Step 6: Final answer
x = 71,252.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.