Finding the Fourth Proportional to 83,769.57, 125,695.36 and 39,400.81
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Solution
The fourth proportional to 83,769.57, 125,695.36 and 39,400.81 is: 59,120.50
Step by Step Solution
- Step 1: Write the proportion equation
83,769.57 : 125,695.36 = 39,400.81 : x - Step 2: Convert to fraction form
83,769.57/125,695.36 = 39,400.81/x - Step 3: Cross multiply
83,769.57x = 125,695.36 × 39,400.81 - Step 4: Simplify right side
83,769.57x = 4,952,498,997.24 - Step 5: Solve for x
x = 4,952,498,997.24/83,769.57 - Step 6: Final answer
x = 59,120.50
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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.