Finding the Fourth Proportional to 78,460.75, 117,742.97 and 36,910.99
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Solution
The fourth proportional to 78,460.75, 117,742.97 and 36,910.99 is: 55,390.87
Step by Step Solution
- Step 1: Write the proportion equation
78,460.75 : 117,742.97 = 36,910.99 : x - Step 2: Convert to fraction form
78,460.75/117,742.97 = 36,910.99/x - Step 3: Cross multiply
78,460.75x = 117,742.97 × 36,910.99 - Step 4: Simplify right side
78,460.75x = 4,346,009,588.24 - Step 5: Solve for x
x = 4,346,009,588.24/78,460.75 - Step 6: Final answer
x = 55,390.87
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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.