Finding the Fourth Proportional to 87,574.31, 131,361.45 and 28,409.99
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Solution
The fourth proportional to 87,574.31, 131,361.45 and 28,409.99 is: 42,614.98
Step by Step Solution
- Step 1: Write the proportion equation
87,574.31 : 131,361.45 = 28,409.99 : x - Step 2: Convert to fraction form
87,574.31/131,361.45 = 28,409.99/x - Step 3: Cross multiply
87,574.31x = 131,361.45 × 28,409.99 - Step 4: Simplify right side
87,574.31x = 3,731,977,456.45 - Step 5: Solve for x
x = 3,731,977,456.45/87,574.31 - Step 6: Final answer
x = 42,614.98
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1.5x scale
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.