Finding the Fourth Proportional to 86,286.80, 129,448.68 and 48,864.56
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Solution
The fourth proportional to 86,286.80, 129,448.68 and 48,864.56 is: 73,307.31
Step by Step Solution
- Step 1: Write the proportion equation
86,286.80 : 129,448.68 = 48,864.56 : x - Step 2: Convert to fraction form
86,286.80/129,448.68 = 48,864.56/x - Step 3: Cross multiply
86,286.80x = 129,448.68 × 48,864.56 - Step 4: Simplify right side
86,286.80x = 6,325,452,790.78 - Step 5: Solve for x
x = 6,325,452,790.78/86,286.80 - Step 6: Final answer
x = 73,307.31
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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.