Finding the Fourth Proportional to 85,717.78, 118,297.67 and 49,905.65
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Solution
The fourth proportional to 85,717.78, 118,297.67 and 49,905.65 is: 68,873.95
Step by Step Solution
- Step 1: Write the proportion equation
85,717.78 : 118,297.67 = 49,905.65 : x - Step 2: Convert to fraction form
85,717.78/118,297.67 = 49,905.65/x - Step 3: Cross multiply
85,717.78x = 118,297.67 × 49,905.65 - Step 4: Simplify right side
85,717.78x = 5,903,722,161.05 - Step 5: Solve for x
x = 5,903,722,161.05/85,717.78 - Step 6: Final answer
x = 68,873.95
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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.