Finding the Fourth Proportional to 105,518.97, 145,610.41 and 57,763.08
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Solution
The fourth proportional to 105,518.97, 145,610.41 and 57,763.08 is: 79,709.89
Step by Step Solution
- Step 1: Write the proportion equation
105,518.97 : 145,610.41 = 57,763.08 : x - Step 2: Convert to fraction form
105,518.97/145,610.41 = 57,763.08/x - Step 3: Cross multiply
105,518.97x = 145,610.41 × 57,763.08 - Step 4: Simplify right side
105,518.97x = 8,410,905,472.85 - Step 5: Solve for x
x = 8,410,905,472.85/105,518.97 - Step 6: Final answer
x = 79,709.89
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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.