Finding the Fourth Proportional to 79,234.80, 118,621.80 and 76,930.80
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Solution
The fourth proportional to 79,234.80, 118,621.80 and 76,930.80 is: 115,172.50
Step by Step Solution
- Step 1: Write the proportion equation
79,234.80 : 118,621.80 = 76,930.80 : x - Step 2: Convert to fraction form
79,234.80/118,621.80 = 76,930.80/x - Step 3: Cross multiply
79,234.80x = 118,621.80 × 76,930.80 - Step 4: Simplify right side
79,234.80x = 9,125,669,971.44 - Step 5: Solve for x
x = 9,125,669,971.44/79,234.80 - Step 6: Final answer
x = 115,172.50
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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.