Finding the Fourth Proportional to 75,120.10, 103,665.77 and 41,130.75
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Solution
The fourth proportional to 75,120.10, 103,665.77 and 41,130.75 is: 56,760.45
Step by Step Solution
- Step 1: Write the proportion equation
75,120.10 : 103,665.77 = 41,130.75 : x - Step 2: Convert to fraction form
75,120.10/103,665.77 = 41,130.75/x - Step 3: Cross multiply
75,120.10x = 103,665.77 × 41,130.75 - Step 4: Simplify right side
75,120.10x = 4,263,850,869.43 - Step 5: Solve for x
x = 4,263,850,869.43/75,120.10 - Step 6: Final answer
x = 56,760.45
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1.5x scale
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.