Finding the Fourth Proportional to 87,767.68, 121,118.85 and 47,481.28
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Solution
The fourth proportional to 87,767.68, 121,118.85 and 47,481.28 is: 65,523.87
Step by Step Solution
- Step 1: Write the proportion equation
87,767.68 : 121,118.85 = 47,481.28 : x - Step 2: Convert to fraction form
87,767.68/121,118.85 = 47,481.28/x - Step 3: Cross multiply
87,767.68x = 121,118.85 × 47,481.28 - Step 4: Simplify right side
87,767.68x = 5,750,878,030.13 - Step 5: Solve for x
x = 5,750,878,030.13/87,767.68 - Step 6: Final answer
x = 65,523.87
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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.