Finding the Fourth Proportional to 86,866.10, 130,198.35 and 40,123.70
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Solution
The fourth proportional to 86,866.10, 130,198.35 and 40,123.70 is: 60,138.99
Step by Step Solution
- Step 1: Write the proportion equation
86,866.10 : 130,198.35 = 40,123.70 : x - Step 2: Convert to fraction form
86,866.10/130,198.35 = 40,123.70/x - Step 3: Cross multiply
86,866.10x = 130,198.35 × 40,123.70 - Step 4: Simplify right side
86,866.10x = 5,224,039,535.90 - Step 5: Solve for x
x = 5,224,039,535.90/86,866.10 - Step 6: Final answer
x = 60,138.99
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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.