Finding the Fourth Proportional to 74,378.44, 111,568.57 and 21,788.99
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Solution
The fourth proportional to 74,378.44, 111,568.57 and 21,788.99 is: 32,683.75
Step by Step Solution
- Step 1: Write the proportion equation
74,378.44 : 111,568.57 = 21,788.99 : x - Step 2: Convert to fraction form
74,378.44/111,568.57 = 21,788.99/x - Step 3: Cross multiply
74,378.44x = 111,568.57 × 21,788.99 - Step 4: Simplify right side
74,378.44x = 2,430,966,456.04 - Step 5: Solve for x
x = 2,430,966,456.04/74,378.44 - Step 6: Final answer
x = 32,683.75
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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.