Finding the Fourth Proportional to 74,747.05, 103,151.74 and 40,755.26
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Solution
The fourth proportional to 74,747.05, 103,151.74 and 40,755.26 is: 56,242.70
Step by Step Solution
- Step 1: Write the proportion equation
74,747.05 : 103,151.74 = 40,755.26 : x - Step 2: Convert to fraction form
74,747.05/103,151.74 = 40,755.26/x - Step 3: Cross multiply
74,747.05x = 103,151.74 × 40,755.26 - Step 4: Simplify right side
74,747.05x = 4,203,975,983.15 - Step 5: Solve for x
x = 4,203,975,983.15/74,747.05 - Step 6: Final answer
x = 56,242.70
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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.