Finding the Fourth Proportional to 87,735.23, 121,074.21 and 47,449.02
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Solution
The fourth proportional to 87,735.23, 121,074.21 and 47,449.02 is: 65,479.43
Step by Step Solution
- Step 1: Write the proportion equation
87,735.23 : 121,074.21 = 47,449.02 : x - Step 2: Convert to fraction form
87,735.23/121,074.21 = 47,449.02/x - Step 3: Cross multiply
87,735.23x = 121,074.21 × 47,449.02 - Step 4: Simplify right side
87,735.23x = 5,744,852,335.68 - Step 5: Solve for x
x = 5,744,852,335.68/87,735.23 - Step 6: Final answer
x = 65,479.43
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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.