Finding the Fourth Proportional to 68,648.99, 102,953.60 and 20,615.66
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Solution
The fourth proportional to 68,648.99, 102,953.60 and 20,615.66 is: 30,917.52
Step by Step Solution
- Step 1: Write the proportion equation
68,648.99 : 102,953.60 = 20,615.66 : x - Step 2: Convert to fraction form
68,648.99/102,953.60 = 20,615.66/x - Step 3: Cross multiply
68,648.99x = 102,953.60 × 20,615.66 - Step 4: Simplify right side
68,648.99x = 2,122,456,664.32 - Step 5: Solve for x
x = 2,122,456,664.32/68,648.99 - Step 6: Final answer
x = 30,917.52
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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.