Finding the Fourth Proportional to 74,319.14, 102,645.61 and 48,938.99
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Solution
The fourth proportional to 74,319.14, 102,645.61 and 48,938.99 is: 67,591.90
Step by Step Solution
- Step 1: Write the proportion equation
74,319.14 : 102,645.61 = 48,938.99 : x - Step 2: Convert to fraction form
74,319.14/102,645.61 = 48,938.99/x - Step 3: Cross multiply
74,319.14x = 102,645.61 × 48,938.99 - Step 4: Simplify right side
74,319.14x = 5,023,371,845.76 - Step 5: Solve for x
x = 5,023,371,845.76/74,319.14 - Step 6: Final answer
x = 67,591.90
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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.