Finding the Fourth Proportional to 71,899.16, 107,899.10 and 29,779.96
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Solution
The fourth proportional to 71,899.16, 107,899.10 and 29,779.96 is: 44,690.80
Step by Step Solution
- Step 1: Write the proportion equation
71,899.16 : 107,899.10 = 29,779.96 : x - Step 2: Convert to fraction form
71,899.16/107,899.10 = 29,779.96/x - Step 3: Cross multiply
71,899.16x = 107,899.10 × 29,779.96 - Step 4: Simplify right side
71,899.16x = 3,213,230,882.04 - Step 5: Solve for x
x = 3,213,230,882.04/71,899.16 - Step 6: Final answer
x = 44,690.80
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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.