Finding the Fourth Proportional to 90,698.20, 125,163.99 and 50,415.71
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Solution
The fourth proportional to 90,698.20, 125,163.99 and 50,415.71 is: 69,573.94
Step by Step Solution
- Step 1: Write the proportion equation
90,698.20 : 125,163.99 = 50,415.71 : x - Step 2: Convert to fraction form
90,698.20/125,163.99 = 50,415.71/x - Step 3: Cross multiply
90,698.20x = 125,163.99 × 50,415.71 - Step 4: Simplify right side
90,698.20x = 6,310,231,422.28 - Step 5: Solve for x
x = 6,310,231,422.28/90,698.20 - Step 6: Final answer
x = 69,573.94
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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.