Finding the Fourth Proportional to 87,935.63, 121,351.16 and 47,649.06
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Solution
The fourth proportional to 87,935.63, 121,351.16 and 47,649.06 is: 65,755.70
Step by Step Solution
- Step 1: Write the proportion equation
87,935.63 : 121,351.16 = 47,649.06 : x - Step 2: Convert to fraction form
87,935.63/121,351.16 = 47,649.06/x - Step 3: Cross multiply
87,935.63x = 121,351.16 × 47,649.06 - Step 4: Simplify right side
87,935.63x = 5,782,268,823.03 - Step 5: Solve for x
x = 5,782,268,823.03/87,935.63 - Step 6: Final answer
x = 65,755.70
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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.