Finding the Fourth Proportional to 103,679.30, 155,451.99 and 56,919.62
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Solution
The fourth proportional to 103,679.30, 155,451.99 and 56,919.62 is: 85,342.67
Step by Step Solution
- Step 1: Write the proportion equation
103,679.30 : 155,451.99 = 56,919.62 : x - Step 2: Convert to fraction form
103,679.30/155,451.99 = 56,919.62/x - Step 3: Cross multiply
103,679.30x = 155,451.99 × 56,919.62 - Step 4: Simplify right side
103,679.30x = 8,848,268,199.04 - Step 5: Solve for x
x = 8,848,268,199.04/103,679.30 - Step 6: Final answer
x = 85,342.67
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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.