Finding the Fourth Proportional to 75,760.20, 113,639.55 and 29,013.08
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Solution
The fourth proportional to 75,760.20, 113,639.55 and 29,013.08 is: 43,519.32
Step by Step Solution
- Step 1: Write the proportion equation
75,760.20 : 113,639.55 = 29,013.08 : x - Step 2: Convert to fraction form
75,760.20/113,639.55 = 29,013.08/x - Step 3: Cross multiply
75,760.20x = 113,639.55 × 29,013.08 - Step 4: Simplify right side
75,760.20x = 3,297,032,714.58 - Step 5: Solve for x
x = 3,297,032,714.58/75,760.20 - Step 6: Final answer
x = 43,519.32
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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.