Finding the Fourth Proportional to 76,635.60, 114,745.68 and 39,621.84
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Solution
The fourth proportional to 76,635.60, 114,745.68 and 39,621.84 is: 59,325.37
Step by Step Solution
- Step 1: Write the proportion equation
76,635.60 : 114,745.68 = 39,621.84 : x - Step 2: Convert to fraction form
76,635.60/114,745.68 = 39,621.84/x - Step 3: Cross multiply
76,635.60x = 114,745.68 × 39,621.84 - Step 4: Simplify right side
76,635.60x = 4,546,434,973.65 - Step 5: Solve for x
x = 4,546,434,973.65/76,635.60 - Step 6: Final answer
x = 59,325.37
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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.