Finding the Fourth Proportional to 76,863.50, 114,531.11 and 68,479.09
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Solution
The fourth proportional to 76,863.50, 114,531.11 and 68,479.09 is: 102,037.85
Step by Step Solution
- Step 1: Write the proportion equation
76,863.50 : 114,531.11 = 68,479.09 : x - Step 2: Convert to fraction form
76,863.50/114,531.11 = 68,479.09/x - Step 3: Cross multiply
76,863.50x = 114,531.11 × 68,479.09 - Step 4: Simplify right side
76,863.50x = 7,842,986,189.49 - Step 5: Solve for x
x = 7,842,986,189.49/76,863.50 - Step 6: Final answer
x = 102,037.85
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.