Finding the Fourth Proportional to 87,804.94, 121,170.80 and 47,518.70
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Solution
The fourth proportional to 87,804.94, 121,170.80 and 47,518.70 is: 65,575.80
Step by Step Solution
- Step 1: Write the proportion equation
87,804.94 : 121,170.80 = 47,518.70 : x - Step 2: Convert to fraction form
87,804.94/121,170.80 = 47,518.70/x - Step 3: Cross multiply
87,804.94x = 121,170.80 × 47,518.70 - Step 4: Simplify right side
87,804.94x = 5,757,878,893.96 - Step 5: Solve for x
x = 5,757,878,893.96/87,804.94 - Step 6: Final answer
x = 65,575.80
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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.