Finding the Fourth Proportional to 70,903.36, 106,370.41 and 20,986.96
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Solution
The fourth proportional to 70,903.36, 106,370.41 and 20,986.96 is: 31,484.99
Step by Step Solution
- Step 1: Write the proportion equation
70,903.36 : 106,370.41 = 20,986.96 : x - Step 2: Convert to fraction form
70,903.36/106,370.41 = 20,986.96/x - Step 3: Cross multiply
70,903.36x = 106,370.41 × 20,986.96 - Step 4: Simplify right side
70,903.36x = 2,232,391,539.85 - Step 5: Solve for x
x = 2,232,391,539.85/70,903.36 - Step 6: Final answer
x = 31,484.99
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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.