Finding the Fourth Proportional to 68,482.13, 102,581.70 and 40,315.38
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Solution
The fourth proportional to 68,482.13, 102,581.70 and 40,315.38 is: 60,389.78
Step by Step Solution
- Step 1: Write the proportion equation
68,482.13 : 102,581.70 = 40,315.38 : x - Step 2: Convert to fraction form
68,482.13/102,581.70 = 40,315.38/x - Step 3: Cross multiply
68,482.13x = 102,581.70 × 40,315.38 - Step 4: Simplify right side
68,482.13x = 4,135,620,216.55 - Step 5: Solve for x
x = 4,135,620,216.55/68,482.13 - Step 6: Final answer
x = 60,389.78
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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.