Finding the Fourth Proportional to 86,281.10, 129,421.56 and 27,121.94
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Solution
The fourth proportional to 86,281.10, 129,421.56 and 27,121.94 is: 40,682.88
Step by Step Solution
- Step 1: Write the proportion equation
86,281.10 : 129,421.56 = 27,121.94 : x - Step 2: Convert to fraction form
86,281.10/129,421.56 = 27,121.94/x - Step 3: Cross multiply
86,281.10x = 129,421.56 × 27,121.94 - Step 4: Simplify right side
86,281.10x = 3,510,163,785.03 - Step 5: Solve for x
x = 3,510,163,785.03/86,281.10 - Step 6: Final answer
x = 40,682.88
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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.