Finding the Fourth Proportional to 103,361.44, 142,639.76 and 58,645.92
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Solution
The fourth proportional to 103,361.44, 142,639.76 and 58,645.92 is: 80,931.92
Step by Step Solution
- Step 1: Write the proportion equation
103,361.44 : 142,639.76 = 58,645.92 : x - Step 2: Convert to fraction form
103,361.44/142,639.76 = 58,645.92/x - Step 3: Cross multiply
103,361.44x = 142,639.76 × 58,645.92 - Step 4: Simplify right side
103,361.44x = 8,365,239,953.78 - Step 5: Solve for x
x = 8,365,239,953.78/103,361.44 - Step 6: Final answer
x = 80,931.92
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.