Finding the Fourth Proportional to 87,840.30, 121,218.58 and 47,553.18
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Solution
The fourth proportional to 87,840.30, 121,218.58 and 47,553.18 is: 65,622.83
Step by Step Solution
- Step 1: Write the proportion equation
87,840.30 : 121,218.58 = 47,553.18 : x - Step 2: Convert to fraction form
87,840.30/121,218.58 = 47,553.18/x - Step 3: Cross multiply
87,840.30x = 121,218.58 × 47,553.18 - Step 4: Simplify right side
87,840.30x = 5,764,328,954.08 - Step 5: Solve for x
x = 5,764,328,954.08/87,840.30 - Step 6: Final answer
x = 65,622.83
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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.