Finding the Fourth Proportional to 68,109.84, 102,192.72 and 30,138.84
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Solution
The fourth proportional to 68,109.84, 102,192.72 and 30,138.84 is: 45,220.63
Step by Step Solution
- Step 1: Write the proportion equation
68,109.84 : 102,192.72 = 30,138.84 : x - Step 2: Convert to fraction form
68,109.84/102,192.72 = 30,138.84/x - Step 3: Cross multiply
68,109.84x = 102,192.72 × 30,138.84 - Step 4: Simplify right side
68,109.84x = 3,079,970,037.24 - Step 5: Solve for x
x = 3,079,970,037.24/68,109.84 - Step 6: Final answer
x = 45,220.63
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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.