Finding the Fourth Proportional to 84,282.74, 126,381.78 and 28,102.96
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Solution
The fourth proportional to 84,282.74, 126,381.78 and 28,102.96 is: 42,140.32
Step by Step Solution
- Step 1: Write the proportion equation
84,282.74 : 126,381.78 = 28,102.96 : x - Step 2: Convert to fraction form
84,282.74/126,381.78 = 28,102.96/x - Step 3: Cross multiply
84,282.74x = 126,381.78 × 28,102.96 - Step 4: Simplify right side
84,282.74x = 3,551,701,335.65 - Step 5: Solve for x
x = 3,551,701,335.65/84,282.74 - Step 6: Final answer
x = 42,140.32
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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.