Finding the Fourth Proportional to 86,785.36, 130,179.12 and 27,620.80
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Solution
The fourth proportional to 86,785.36, 130,179.12 and 27,620.80 is: 41,431.54
Step by Step Solution
- Step 1: Write the proportion equation
86,785.36 : 130,179.12 = 27,620.80 : x - Step 2: Convert to fraction form
86,785.36/130,179.12 = 27,620.80/x - Step 3: Cross multiply
86,785.36x = 130,179.12 × 27,620.80 - Step 4: Simplify right side
86,785.36x = 3,595,651,437.70 - Step 5: Solve for x
x = 3,595,651,437.70/86,785.36 - Step 6: Final answer
x = 41,431.54
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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.