Finding the Fourth Proportional to 68,770.65, 103,155.12 and 18,850.70
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Solution
The fourth proportional to 68,770.65, 103,155.12 and 18,850.70 is: 28,275.82
Step by Step Solution
- Step 1: Write the proportion equation
68,770.65 : 103,155.12 = 18,850.70 : x - Step 2: Convert to fraction form
68,770.65/103,155.12 = 18,850.70/x - Step 3: Cross multiply
68,770.65x = 103,155.12 × 18,850.70 - Step 4: Simplify right side
68,770.65x = 1,944,546,220.58 - Step 5: Solve for x
x = 1,944,546,220.58/68,770.65 - Step 6: Final answer
x = 28,275.82
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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.