Finding the Fourth Proportional to 81,765.18, 122,650.20 and 34,987.68
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Solution
The fourth proportional to 81,765.18, 122,650.20 and 34,987.68 is: 52,482.56
Step by Step Solution
- Step 1: Write the proportion equation
81,765.18 : 122,650.20 = 34,987.68 : x - Step 2: Convert to fraction form
81,765.18/122,650.20 = 34,987.68/x - Step 3: Cross multiply
81,765.18x = 122,650.20 × 34,987.68 - Step 4: Simplify right side
81,765.18x = 4,291,245,949.54 - Step 5: Solve for x
x = 4,291,245,949.54/81,765.18 - Step 6: Final answer
x = 52,482.56
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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.