Finding the Fourth Proportional to 86,589.28, 129,786.72 and 56,660.96
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Solution
The fourth proportional to 86,589.28, 129,786.72 and 56,660.96 is: 84,927.84
Step by Step Solution
- Step 1: Write the proportion equation
86,589.28 : 129,786.72 = 56,660.96 : x - Step 2: Convert to fraction form
86,589.28/129,786.72 = 56,660.96/x - Step 3: Cross multiply
86,589.28x = 129,786.72 × 56,660.96 - Step 4: Simplify right side
86,589.28x = 7,353,840,150.45 - Step 5: Solve for x
x = 7,353,840,150.45/86,589.28 - Step 6: Final answer
x = 84,927.84
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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.