Finding the Fourth Proportional to 87,448.12, 120,678.42 and 49,724.68
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Solution
The fourth proportional to 87,448.12, 120,678.42 and 49,724.68 is: 68,620.07
Step by Step Solution
- Step 1: Write the proportion equation
87,448.12 : 120,678.42 = 49,724.68 : x - Step 2: Convert to fraction form
87,448.12/120,678.42 = 49,724.68/x - Step 3: Cross multiply
87,448.12x = 120,678.42 × 49,724.68 - Step 4: Simplify right side
87,448.12x = 6,000,695,817.41 - Step 5: Solve for x
x = 6,000,695,817.41/87,448.12 - Step 6: Final answer
x = 68,620.07
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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.