Finding the Fourth Proportional to 84,389.19, 126,558.27 and 28,214.88
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Solution
The fourth proportional to 84,389.19, 126,558.27 and 28,214.88 is: 42,313.79
Step by Step Solution
- Step 1: Write the proportion equation
84,389.19 : 126,558.27 = 28,214.88 : x - Step 2: Convert to fraction form
84,389.19/126,558.27 = 28,214.88/x - Step 3: Cross multiply
84,389.19x = 126,558.27 × 28,214.88 - Step 4: Simplify right side
84,389.19x = 3,570,826,401.06 - Step 5: Solve for x
x = 3,570,826,401.06/84,389.19 - Step 6: Final answer
x = 42,313.79
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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.