Finding the Fourth Proportional to 71,785.53, 107,670.08 and 19,199.12
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Solution
The fourth proportional to 71,785.53, 107,670.08 and 19,199.12 is: 28,796.47
Step by Step Solution
- Step 1: Write the proportion equation
71,785.53 : 107,670.08 = 19,199.12 : x - Step 2: Convert to fraction form
71,785.53/107,670.08 = 19,199.12/x - Step 3: Cross multiply
71,785.53x = 107,670.08 × 19,199.12 - Step 4: Simplify right side
71,785.53x = 2,067,170,151.98 - Step 5: Solve for x
x = 2,067,170,151.98/71,785.53 - Step 6: Final answer
x = 28,796.47
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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.