Finding the Fourth Proportional to 78,029.22, 117,043.74 and 25,438.62
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Solution
The fourth proportional to 78,029.22, 117,043.74 and 25,438.62 is: 38,157.90
Step by Step Solution
- Step 1: Write the proportion equation
78,029.22 : 117,043.74 = 25,438.62 : x - Step 2: Convert to fraction form
78,029.22/117,043.74 = 25,438.62/x - Step 3: Cross multiply
78,029.22x = 117,043.74 × 25,438.62 - Step 4: Simplify right side
78,029.22x = 2,977,431,225.24 - Step 5: Solve for x
x = 2,977,431,225.24/78,029.22 - Step 6: Final answer
x = 38,157.90
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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.