Finding the Fourth Proportional to 87,817.80, 131,726.70 and 73,237.80
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Solution
The fourth proportional to 87,817.80, 131,726.70 and 73,237.80 is: 109,856.70
Step by Step Solution
- Step 1: Write the proportion equation
87,817.80 : 131,726.70 = 73,237.80 : x - Step 2: Convert to fraction form
87,817.80/131,726.70 = 73,237.80/x - Step 3: Cross multiply
87,817.80x = 131,726.70 × 73,237.80 - Step 4: Simplify right side
87,817.80x = 9,647,373,709.26 - Step 5: Solve for x
x = 9,647,373,709.26/87,817.80 - Step 6: Final answer
x = 109,856.70
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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.