Finding the Fourth Proportional to 87,804.64, 121,170.18 and 47,518.48
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Solution
The fourth proportional to 87,804.64, 121,170.18 and 47,518.48 is: 65,575.38
Step by Step Solution
- Step 1: Write the proportion equation
87,804.64 : 121,170.18 = 47,518.48 : x - Step 2: Convert to fraction form
87,804.64/121,170.18 = 47,518.48/x - Step 3: Cross multiply
87,804.64x = 121,170.18 × 47,518.48 - Step 4: Simplify right side
87,804.64x = 5,757,822,774.93 - Step 5: Solve for x
x = 5,757,822,774.93/87,804.64 - Step 6: Final answer
x = 65,575.38
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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.