Finding the Fourth Proportional to 68,203.97, 102,321.74 and 21,455.63
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Solution
The fourth proportional to 68,203.97, 102,321.74 and 21,455.63 is: 32,188.41
Step by Step Solution
- Step 1: Write the proportion equation
68,203.97 : 102,321.74 = 21,455.63 : x - Step 2: Convert to fraction form
68,203.97/102,321.74 = 21,455.63/x - Step 3: Cross multiply
68,203.97x = 102,321.74 × 21,455.63 - Step 4: Simplify right side
68,203.97x = 2,195,376,936.43 - Step 5: Solve for x
x = 2,195,376,936.43/68,203.97 - Step 6: Final answer
x = 32,188.41
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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.