Finding the Fourth Proportional to 77,735.04, 116,660.21 and 57,790.68
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Solution
The fourth proportional to 77,735.04, 116,660.21 and 57,790.68 is: 86,728.88
Step by Step Solution
- Step 1: Write the proportion equation
77,735.04 : 116,660.21 = 57,790.68 : x - Step 2: Convert to fraction form
77,735.04/116,660.21 = 57,790.68/x - Step 3: Cross multiply
77,735.04x = 116,660.21 × 57,790.68 - Step 4: Simplify right side
77,735.04x = 6,741,872,575.89 - Step 5: Solve for x
x = 6,741,872,575.89/77,735.04 - Step 6: Final answer
x = 86,728.88
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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.