Finding the Fourth Proportional to 84,610.74, 116,709.90 and 54,435.36
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Solution
The fourth proportional to 84,610.74, 116,709.90 and 54,435.36 is: 75,086.75
Step by Step Solution
- Step 1: Write the proportion equation
84,610.74 : 116,709.90 = 54,435.36 : x - Step 2: Convert to fraction form
84,610.74/116,709.90 = 54,435.36/x - Step 3: Cross multiply
84,610.74x = 116,709.90 × 54,435.36 - Step 4: Simplify right side
84,610.74x = 6,353,145,422.06 - Step 5: Solve for x
x = 6,353,145,422.06/84,610.74 - Step 6: Final answer
x = 75,086.75
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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.