Finding the Fourth Proportional to 68,078.20, 102,122.26 and 18,158.10
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Solution
The fourth proportional to 68,078.20, 102,122.26 and 18,158.10 is: 27,238.47
Step by Step Solution
- Step 1: Write the proportion equation
68,078.20 : 102,122.26 = 18,158.10 : x - Step 2: Convert to fraction form
68,078.20/102,122.26 = 18,158.10/x - Step 3: Cross multiply
68,078.20x = 102,122.26 × 18,158.10 - Step 4: Simplify right side
68,078.20x = 1,854,346,209.31 - Step 5: Solve for x
x = 1,854,346,209.31/68,078.20 - Step 6: Final answer
x = 27,238.47
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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.