Finding the Fourth Proportional to 84,548.84, 126,828.72 and 28,386.68
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Solution
The fourth proportional to 84,548.84, 126,828.72 and 28,386.68 is: 42,581.85
Step by Step Solution
- Step 1: Write the proportion equation
84,548.84 : 126,828.72 = 28,386.68 : x - Step 2: Convert to fraction form
84,548.84/126,828.72 = 28,386.68/x - Step 3: Cross multiply
84,548.84x = 126,828.72 × 28,386.68 - Step 4: Simplify right side
84,548.84x = 3,600,245,655.31 - Step 5: Solve for x
x = 3,600,245,655.31/84,548.84 - Step 6: Final answer
x = 42,581.85
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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.