Finding the Fourth Proportional to 86,325.20, 129,228.60 and 51,246.80
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Solution
The fourth proportional to 86,325.20, 129,228.60 and 51,246.80 is: 76,716.33
Step by Step Solution
- Step 1: Write the proportion equation
86,325.20 : 129,228.60 = 51,246.80 : x - Step 2: Convert to fraction form
86,325.20/129,228.60 = 51,246.80/x - Step 3: Cross multiply
86,325.20x = 129,228.60 × 51,246.80 - Step 4: Simplify right side
86,325.20x = 6,622,552,218.48 - Step 5: Solve for x
x = 6,622,552,218.48/86,325.20 - Step 6: Final answer
x = 76,716.33
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1.5x scale
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.