Finding the Fourth Proportional to 103,637.44, 155,438.76 and 28,765.19
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Solution
The fourth proportional to 103,637.44, 155,438.76 and 28,765.19 is: 43,142.95
Step by Step Solution
- Step 1: Write the proportion equation
103,637.44 : 155,438.76 = 28,765.19 : x - Step 2: Convert to fraction form
103,637.44/155,438.76 = 28,765.19/x - Step 3: Cross multiply
103,637.44x = 155,438.76 × 28,765.19 - Step 4: Simplify right side
103,637.44x = 4,471,224,759.48 - Step 5: Solve for x
x = 4,471,224,759.48/103,637.44 - Step 6: Final answer
x = 43,142.95
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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.