Finding the Fourth Proportional to 68,623.20, 102,886.20 and 31,201.20
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Solution
The fourth proportional to 68,623.20, 102,886.20 and 31,201.20 is: 46,779.70
Step by Step Solution
- Step 1: Write the proportion equation
68,623.20 : 102,886.20 = 31,201.20 : x - Step 2: Convert to fraction form
68,623.20/102,886.20 = 31,201.20/x - Step 3: Cross multiply
68,623.20x = 102,886.20 × 31,201.20 - Step 4: Simplify right side
68,623.20x = 3,210,172,903.44 - Step 5: Solve for x
x = 3,210,172,903.44/68,623.20 - Step 6: Final answer
x = 46,779.70
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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.