Finding the Fourth Proportional to 76,893.12, 115,119.36 and 69,512.64
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Solution
The fourth proportional to 76,893.12, 115,119.36 and 69,512.64 is: 104,069.79
Step by Step Solution
- Step 1: Write the proportion equation
76,893.12 : 115,119.36 = 69,512.64 : x - Step 2: Convert to fraction form
76,893.12/115,119.36 = 69,512.64/x - Step 3: Cross multiply
76,893.12x = 115,119.36 × 69,512.64 - Step 4: Simplify right side
76,893.12x = 8,002,250,628.71 - Step 5: Solve for x
x = 8,002,250,628.71/76,893.12 - Step 6: Final answer
x = 104,069.79
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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.