Finding the Fourth Proportional to 87,154.66, 120,268.09 and 48,907.68
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Solution
The fourth proportional to 87,154.66, 120,268.09 and 48,907.68 is: 67,489.60
Step by Step Solution
- Step 1: Write the proportion equation
87,154.66 : 120,268.09 = 48,907.68 : x - Step 2: Convert to fraction form
87,154.66/120,268.09 = 48,907.68/x - Step 3: Cross multiply
87,154.66x = 120,268.09 × 48,907.68 - Step 4: Simplify right side
87,154.66x = 5,882,033,259.93 - Step 5: Solve for x
x = 5,882,033,259.93/87,154.66 - Step 6: Final answer
x = 67,489.60
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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.