Finding the Fourth Proportional to 70,744.19, 106,079.77 and 20,817.80
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Solution
The fourth proportional to 70,744.19, 106,079.77 and 20,817.80 is: 31,215.96
Step by Step Solution
- Step 1: Write the proportion equation
70,744.19 : 106,079.77 = 20,817.80 : x - Step 2: Convert to fraction form
70,744.19/106,079.77 = 20,817.80/x - Step 3: Cross multiply
70,744.19x = 106,079.77 × 20,817.80 - Step 4: Simplify right side
70,744.19x = 2,208,347,727.13 - Step 5: Solve for x
x = 2,208,347,727.13/70,744.19 - Step 6: Final answer
x = 31,215.96
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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.