Finding the Fourth Proportional to 74,748.05, 103,153.12 and 40,756.26
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Solution
The fourth proportional to 74,748.05, 103,153.12 and 40,756.26 is: 56,244.08
Step by Step Solution
- Step 1: Write the proportion equation
74,748.05 : 103,153.12 = 40,756.26 : x - Step 2: Convert to fraction form
74,748.05/103,153.12 = 40,756.26/x - Step 3: Cross multiply
74,748.05x = 103,153.12 × 40,756.26 - Step 4: Simplify right side
74,748.05x = 4,204,135,378.53 - Step 5: Solve for x
x = 4,204,135,378.53/74,748.05 - Step 6: Final answer
x = 56,244.08
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1.5x scale
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.