Finding the Fourth Proportional to 77,040,619.20, 115,560,928.80 and 25,905,643.20
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Solution
The fourth proportional to 77,040,619.20, 115,560,928.80 and 25,905,643.20 is: 38,858,464.80
Step by Step Solution
- Step 1: Write the proportion equation
77,040,619.20 : 115,560,928.80 = 25,905,643.20 : x - Step 2: Convert to fraction form
77,040,619.20/115,560,928.80 = 25,905,643.20/x - Step 3: Cross multiply
77,040,619.20x = 115,560,928.80 × 25,905,643.20 - Step 4: Simplify right side
77,040,619.20x = 2,993,680,189,353,404 - Step 5: Solve for x
x = 2,993,680,189,353,404/77,040,619.20 - Step 6: Final answer
x = 38,858,464.80
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1.5x scale
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.