Finding the Fourth Proportional to 68,274.20, 102,780.14 and 61,408.10
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Solution
The fourth proportional to 68,274.20, 102,780.14 and 61,408.10 is: 92,443.90
Step by Step Solution
- Step 1: Write the proportion equation
68,274.20 : 102,780.14 = 61,408.10 : x - Step 2: Convert to fraction form
68,274.20/102,780.14 = 61,408.10/x - Step 3: Cross multiply
68,274.20x = 102,780.14 × 61,408.10 - Step 4: Simplify right side
68,274.20x = 6,311,533,115.13 - Step 5: Solve for x
x = 6,311,533,115.13/68,274.20 - Step 6: Final answer
x = 92,443.90
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.