Finding the Fourth Proportional to 84,121.70, 126,135.27 and 27,931.73
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Solution
The fourth proportional to 84,121.70, 126,135.27 and 27,931.73 is: 41,881.89
Step by Step Solution
- Step 1: Write the proportion equation
84,121.70 : 126,135.27 = 27,931.73 : x - Step 2: Convert to fraction form
84,121.70/126,135.27 = 27,931.73/x - Step 3: Cross multiply
84,121.70x = 126,135.27 × 27,931.73 - Step 4: Simplify right side
84,121.70x = 3,523,175,674.44 - Step 5: Solve for x
x = 3,523,175,674.44/84,121.70 - Step 6: Final answer
x = 41,881.89
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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.