Finding the Fourth Proportional to 76,855.11, 115,321.86 and 51,842.74
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Solution
The fourth proportional to 76,855.11, 115,321.86 and 51,842.74 is: 77,790.55
Step by Step Solution
- Step 1: Write the proportion equation
76,855.11 : 115,321.86 = 51,842.74 : x - Step 2: Convert to fraction form
76,855.11/115,321.86 = 51,842.74/x - Step 3: Cross multiply
76,855.11x = 115,321.86 × 51,842.74 - Step 4: Simplify right side
76,855.11x = 5,978,600,627.69 - Step 5: Solve for x
x = 5,978,600,627.69/76,855.11 - Step 6: Final answer
x = 77,790.55
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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.