Finding the Fourth Proportional to 84,683.80, 126,988.80 and 28,508.84
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Solution
The fourth proportional to 84,683.80, 126,988.80 and 28,508.84 is: 42,750.84
Step by Step Solution
- Step 1: Write the proportion equation
84,683.80 : 126,988.80 = 28,508.84 : x - Step 2: Convert to fraction form
84,683.80/126,988.80 = 28,508.84/x - Step 3: Cross multiply
84,683.80x = 126,988.80 × 28,508.84 - Step 4: Simplify right side
84,683.80x = 3,620,303,380.99 - Step 5: Solve for x
x = 3,620,303,380.99/84,683.80 - Step 6: Final answer
x = 42,750.84
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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.