Finding the Fourth Proportional to 76,767.76, 105,939.74 and 44,508.65
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Solution
The fourth proportional to 76,767.76, 105,939.74 and 44,508.65 is: 61,422.07
Step by Step Solution
- Step 1: Write the proportion equation
76,767.76 : 105,939.74 = 44,508.65 : x - Step 2: Convert to fraction form
76,767.76/105,939.74 = 44,508.65/x - Step 3: Cross multiply
76,767.76x = 105,939.74 × 44,508.65 - Step 4: Simplify right side
76,767.76x = 4,715,234,586.21 - Step 5: Solve for x
x = 4,715,234,586.21/76,767.76 - Step 6: Final answer
x = 61,422.07
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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.