Finding the Fourth Proportional to 74,433.75, 102,720.20 and 40,899.75
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Solution
The fourth proportional to 74,433.75, 102,720.20 and 40,899.75 is: 56,442.55
Step by Step Solution
- Step 1: Write the proportion equation
74,433.75 : 102,720.20 = 40,899.75 : x - Step 2: Convert to fraction form
74,433.75/102,720.20 = 40,899.75/x - Step 3: Cross multiply
74,433.75x = 102,720.20 × 40,899.75 - Step 4: Simplify right side
74,433.75x = 4,201,230,499.95 - Step 5: Solve for x
x = 4,201,230,499.95/74,433.75 - Step 6: Final answer
x = 56,442.55
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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.