Finding the Fourth Proportional to 68,351.20, 102,541.20 and 21,608.80
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Solution
The fourth proportional to 68,351.20, 102,541.20 and 21,608.80 is: 32,417.75
Step by Step Solution
- Step 1: Write the proportion equation
68,351.20 : 102,541.20 = 21,608.80 : x - Step 2: Convert to fraction form
68,351.20/102,541.20 = 21,608.80/x - Step 3: Cross multiply
68,351.20x = 102,541.20 × 21,608.80 - Step 4: Simplify right side
68,351.20x = 2,215,792,282.56 - Step 5: Solve for x
x = 2,215,792,282.56/68,351.20 - Step 6: Final answer
x = 32,417.75
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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.