Finding the Fourth Proportional to 74,712.10, 111,938.55 and 48,403.30
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Solution
The fourth proportional to 74,712.10, 111,938.55 and 48,403.30 is: 72,520.99
Step by Step Solution
- Step 1: Write the proportion equation
74,712.10 : 111,938.55 = 48,403.30 : x - Step 2: Convert to fraction form
74,712.10/111,938.55 = 48,403.30/x - Step 3: Cross multiply
74,712.10x = 111,938.55 × 48,403.30 - Step 4: Simplify right side
74,712.10x = 5,418,195,217.22 - Step 5: Solve for x
x = 5,418,195,217.22/74,712.10 - Step 6: Final answer
x = 72,520.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.