Finding the Fourth Proportional to 76,388.04, 105,393.96 and 49,531.68
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Solution
The fourth proportional to 76,388.04, 105,393.96 and 49,531.68 is: 68,339.75
Step by Step Solution
- Step 1: Write the proportion equation
76,388.04 : 105,393.96 = 49,531.68 : x - Step 2: Convert to fraction form
76,388.04/105,393.96 = 49,531.68/x - Step 3: Cross multiply
76,388.04x = 105,393.96 × 49,531.68 - Step 4: Simplify right side
76,388.04x = 5,220,339,900.65 - Step 5: Solve for x
x = 5,220,339,900.65/76,388.04 - Step 6: Final answer
x = 68,339.75
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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.