Finding the Fourth Proportional to 78,163.07, 107,867.04 and 47,965.07
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Solution
The fourth proportional to 78,163.07, 107,867.04 and 47,965.07 is: 66,193.02
Step by Step Solution
- Step 1: Write the proportion equation
78,163.07 : 107,867.04 = 47,965.07 : x - Step 2: Convert to fraction form
78,163.07/107,867.04 = 47,965.07/x - Step 3: Cross multiply
78,163.07x = 107,867.04 × 47,965.07 - Step 4: Simplify right side
78,163.07x = 5,173,849,584.96 - Step 5: Solve for x
x = 5,173,849,584.96/78,163.07 - Step 6: Final answer
x = 66,193.02
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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.