Finding the Fourth Proportional to 76,983.36, 106,197.12 and 66,889.68
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Solution
The fourth proportional to 76,983.36, 106,197.12 and 66,889.68 is: 92,273.08
Step by Step Solution
- Step 1: Write the proportion equation
76,983.36 : 106,197.12 = 66,889.68 : x - Step 2: Convert to fraction form
76,983.36/106,197.12 = 66,889.68/x - Step 3: Cross multiply
76,983.36x = 106,197.12 × 66,889.68 - Step 4: Simplify right side
76,983.36x = 7,103,491,373.72 - Step 5: Solve for x
x = 7,103,491,373.72/76,983.36 - Step 6: Final answer
x = 92,273.08
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.