Finding the Fourth Proportional to 84,453.12, 126,679.68 and 68,639.06
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Solution
The fourth proportional to 84,453.12, 126,679.68 and 68,639.06 is: 102,958.59
Step by Step Solution
- Step 1: Write the proportion equation
84,453.12 : 126,679.68 = 68,639.06 : x - Step 2: Convert to fraction form
84,453.12/126,679.68 = 68,639.06/x - Step 3: Cross multiply
84,453.12x = 126,679.68 × 68,639.06 - Step 4: Simplify right side
84,453.12x = 8,695,174,644.60 - Step 5: Solve for x
x = 8,695,174,644.60/84,453.12 - Step 6: Final answer
x = 102,958.59
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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.