Finding the Fourth Proportional to 81,195.96, 121,791.18 and 28,604.06
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Solution
The fourth proportional to 81,195.96, 121,791.18 and 28,604.06 is: 42,905.12
Step by Step Solution
- Step 1: Write the proportion equation
81,195.96 : 121,791.18 = 28,604.06 : x - Step 2: Convert to fraction form
81,195.96/121,791.18 = 28,604.06/x - Step 3: Cross multiply
81,195.96x = 121,791.18 × 28,604.06 - Step 4: Simplify right side
81,195.96x = 3,483,722,220.19 - Step 5: Solve for x
x = 3,483,722,220.19/81,195.96 - Step 6: Final answer
x = 42,905.12
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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.