Finding the Fourth Proportional to 75,121.40, 112,515.99 and 51,372.66
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Solution
The fourth proportional to 75,121.40, 112,515.99 and 51,372.66 is: 76,945.40
Step by Step Solution
- Step 1: Write the proportion equation
75,121.40 : 112,515.99 = 51,372.66 : x - Step 2: Convert to fraction form
75,121.40/112,515.99 = 51,372.66/x - Step 3: Cross multiply
75,121.40x = 112,515.99 × 51,372.66 - Step 4: Simplify right side
75,121.40x = 5,780,245,698.83 - Step 5: Solve for x
x = 5,780,245,698.83/75,121.40 - Step 6: Final answer
x = 76,945.40
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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.