Finding the Fourth Proportional to 71,725.84, 107,589.12 and 21,806.32
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Solution
The fourth proportional to 71,725.84, 107,589.12 and 21,806.32 is: 32,709.59
Step by Step Solution
- Step 1: Write the proportion equation
71,725.84 : 107,589.12 = 21,806.32 : x - Step 2: Convert to fraction form
71,725.84/107,589.12 = 21,806.32/x - Step 3: Cross multiply
71,725.84x = 107,589.12 × 21,806.32 - Step 4: Simplify right side
71,725.84x = 2,346,122,779.24 - Step 5: Solve for x
x = 2,346,122,779.24/71,725.84 - Step 6: Final answer
x = 32,709.59
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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.