Finding the Fourth Proportional to 75,810.42, 113,785.67 and 38,396.79
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Solution
The fourth proportional to 75,810.42, 113,785.67 and 38,396.79 is: 57,630.66
Step by Step Solution
- Step 1: Write the proportion equation
75,810.42 : 113,785.67 = 38,396.79 : x - Step 2: Convert to fraction form
75,810.42/113,785.67 = 38,396.79/x - Step 3: Cross multiply
75,810.42x = 113,785.67 × 38,396.79 - Step 4: Simplify right side
75,810.42x = 4,369,004,571.99 - Step 5: Solve for x
x = 4,369,004,571.99/75,810.42 - Step 6: Final answer
x = 57,630.66
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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.