Finding the Fourth Proportional to 87,768.50, 121,120.36 and 47,482.29
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Solution
The fourth proportional to 87,768.50, 121,120.36 and 47,482.29 is: 65,525.47
Step by Step Solution
- Step 1: Write the proportion equation
87,768.50 : 121,120.36 = 47,482.29 : x - Step 2: Convert to fraction form
87,768.50/121,120.36 = 47,482.29/x - Step 3: Cross multiply
87,768.50x = 121,120.36 × 47,482.29 - Step 4: Simplify right side
87,768.50x = 5,751,071,939.72 - Step 5: Solve for x
x = 5,751,071,939.72/87,768.50 - Step 6: Final answer
x = 65,525.47
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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.