Finding the Fourth Proportional to 70,741.96, 106,095.30 and 20,812.12
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Solution
The fourth proportional to 70,741.96, 106,095.30 and 20,812.12 is: 31,212.99
Step by Step Solution
- Step 1: Write the proportion equation
70,741.96 : 106,095.30 = 20,812.12 : x - Step 2: Convert to fraction form
70,741.96/106,095.30 = 20,812.12/x - Step 3: Cross multiply
70,741.96x = 106,095.30 × 20,812.12 - Step 4: Simplify right side
70,741.96x = 2,208,068,115.04 - Step 5: Solve for x
x = 2,208,068,115.04/70,741.96 - Step 6: Final answer
x = 31,212.99
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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.