Finding the Fourth Proportional to 68,689.80, 103,034.70 and 66,745.80
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Solution
The fourth proportional to 68,689.80, 103,034.70 and 66,745.80 is: 100,118.70
Step by Step Solution
- Step 1: Write the proportion equation
68,689.80 : 103,034.70 = 66,745.80 : x - Step 2: Convert to fraction form
68,689.80/103,034.70 = 66,745.80/x - Step 3: Cross multiply
68,689.80x = 103,034.70 × 66,745.80 - Step 4: Simplify right side
68,689.80x = 6,877,133,479.26 - Step 5: Solve for x
x = 6,877,133,479.26/68,689.80 - Step 6: Final answer
x = 100,118.70
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1.5x scale
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.