Finding the Fourth Proportional to 74,750.16, 103,163.97 and 42,489.63
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Solution
The fourth proportional to 74,750.16, 103,163.97 and 42,489.63 is: 58,640.66
Step by Step Solution
- Step 1: Write the proportion equation
74,750.16 : 103,163.97 = 42,489.63 : x - Step 2: Convert to fraction form
74,750.16/103,163.97 = 42,489.63/x - Step 3: Cross multiply
74,750.16x = 103,163.97 × 42,489.63 - Step 4: Simplify right side
74,750.16x = 4,383,399,073.97 - Step 5: Solve for x
x = 4,383,399,073.97/74,750.16 - Step 6: Final answer
x = 58,640.66
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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.