Finding the Fourth Proportional to 71,578.08, 107,354.88 and 18,992.88
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Solution
The fourth proportional to 71,578.08, 107,354.88 and 18,992.88 is: 28,486.07
Step by Step Solution
- Step 1: Write the proportion equation
71,578.08 : 107,354.88 = 18,992.88 : x - Step 2: Convert to fraction form
71,578.08/107,354.88 = 18,992.88/x - Step 3: Cross multiply
71,578.08x = 107,354.88 × 18,992.88 - Step 4: Simplify right side
71,578.08x = 2,038,978,353.25 - Step 5: Solve for x
x = 2,038,978,353.25/71,578.08 - Step 6: Final answer
x = 28,486.07
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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.