Finding the Fourth Proportional to 87,940.38, 121,354.20 and 51,636.99
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Solution
The fourth proportional to 87,940.38, 121,354.20 and 51,636.99 is: 71,256.98
Step by Step Solution
- Step 1: Write the proportion equation
87,940.38 : 121,354.20 = 51,636.99 : x - Step 2: Convert to fraction form
87,940.38/121,354.20 = 51,636.99/x - Step 3: Cross multiply
87,940.38x = 121,354.20 × 51,636.99 - Step 4: Simplify right side
87,940.38x = 6,266,365,611.86 - Step 5: Solve for x
x = 6,266,365,611.86/87,940.38 - Step 6: Final answer
x = 71,256.98
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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.