Finding the Fourth Proportional to 74,947.87, 112,419.13 and 18,788.44
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Solution
The fourth proportional to 74,947.87, 112,419.13 and 18,788.44 is: 28,181.99
Step by Step Solution
- Step 1: Write the proportion equation
74,947.87 : 112,419.13 = 18,788.44 : x - Step 2: Convert to fraction form
74,947.87/112,419.13 = 18,788.44/x - Step 3: Cross multiply
74,947.87x = 112,419.13 × 18,788.44 - Step 4: Simplify right side
74,947.87x = 2,112,180,078.86 - Step 5: Solve for x
x = 2,112,180,078.86/74,947.87 - Step 6: Final answer
x = 28,181.99
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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.