Finding the Fourth Proportional to 69,941.72, 104,912.58 and 20,021.99
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Solution
The fourth proportional to 69,941.72, 104,912.58 and 20,021.99 is: 30,032.99
Step by Step Solution
- Step 1: Write the proportion equation
69,941.72 : 104,912.58 = 20,021.99 : x - Step 2: Convert to fraction form
69,941.72/104,912.58 = 20,021.99/x - Step 3: Cross multiply
69,941.72x = 104,912.58 × 20,021.99 - Step 4: Simplify right side
69,941.72x = 2,100,558,889.92 - Step 5: Solve for x
x = 2,100,558,889.92/69,941.72 - Step 6: Final answer
x = 30,032.99
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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.