Finding the Fourth Proportional to 76,621.80, 114,932.70 and 53,293.80
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Solution
The fourth proportional to 76,621.80, 114,932.70 and 53,293.80 is: 79,940.70
Step by Step Solution
- Step 1: Write the proportion equation
76,621.80 : 114,932.70 = 53,293.80 : x - Step 2: Convert to fraction form
76,621.80/114,932.70 = 53,293.80/x - Step 3: Cross multiply
76,621.80x = 114,932.70 × 53,293.80 - Step 4: Simplify right side
76,621.80x = 6,125,200,327.26 - Step 5: Solve for x
x = 6,125,200,327.26/76,621.80 - Step 6: Final answer
x = 79,940.70
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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.