Finding the Fourth Proportional to 75,078.20, 112,617.30 and 73,911.80
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Solution
The fourth proportional to 75,078.20, 112,617.30 and 73,911.80 is: 110,867.70
Step by Step Solution
- Step 1: Write the proportion equation
75,078.20 : 112,617.30 = 73,911.80 : x - Step 2: Convert to fraction form
75,078.20/112,617.30 = 73,911.80/x - Step 3: Cross multiply
75,078.20x = 112,617.30 × 73,911.80 - Step 4: Simplify right side
75,078.20x = 8,323,747,354.14 - Step 5: Solve for x
x = 8,323,747,354.14/75,078.20 - Step 6: Final answer
x = 110,867.70
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1.5x scale
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.