Finding the Fourth Proportional to 86,421.80, 119,262.56 and 48,183.75
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Solution
The fourth proportional to 86,421.80, 119,262.56 and 48,183.75 is: 66,493.84
Step by Step Solution
- Step 1: Write the proportion equation
86,421.80 : 119,262.56 = 48,183.75 : x - Step 2: Convert to fraction form
86,421.80/119,262.56 = 48,183.75/x - Step 3: Cross multiply
86,421.80x = 119,262.56 × 48,183.75 - Step 4: Simplify right side
86,421.80x = 5,746,517,134.48 - Step 5: Solve for x
x = 5,746,517,134.48/86,421.80 - Step 6: Final answer
x = 66,493.84
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.