Finding the Fourth Proportional to 76,910.41, 115,373.67 and 20,750.99
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Solution
The fourth proportional to 76,910.41, 115,373.67 and 20,750.99 is: 31,128.65
Step by Step Solution
- Step 1: Write the proportion equation
76,910.41 : 115,373.67 = 20,750.99 : x - Step 2: Convert to fraction form
76,910.41/115,373.67 = 20,750.99/x - Step 3: Cross multiply
76,910.41x = 115,373.67 × 20,750.99 - Step 4: Simplify right side
76,910.41x = 2,394,117,217.75 - Step 5: Solve for x
x = 2,394,117,217.75/76,910.41 - Step 6: Final answer
x = 31,128.65
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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.