Finding the Fourth Proportional to 68,471.20, 102,706.80 and 19,216.80
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Solution
The fourth proportional to 68,471.20, 102,706.80 and 19,216.80 is: 28,825.20
Step by Step Solution
- Step 1: Write the proportion equation
68,471.20 : 102,706.80 = 19,216.80 : x - Step 2: Convert to fraction form
68,471.20/102,706.80 = 19,216.80/x - Step 3: Cross multiply
68,471.20x = 102,706.80 × 19,216.80 - Step 4: Simplify right side
68,471.20x = 1,973,696,034.24 - Step 5: Solve for x
x = 1,973,696,034.24/68,471.20 - Step 6: Final answer
x = 28,825.20
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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.