Finding the Fourth Proportional to 89,879.36, 134,714.07 and 67,621.23
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Solution
The fourth proportional to 89,879.36, 134,714.07 and 67,621.23 is: 101,352.88
Step by Step Solution
- Step 1: Write the proportion equation
89,879.36 : 134,714.07 = 67,621.23 : x - Step 2: Convert to fraction form
89,879.36/134,714.07 = 67,621.23/x - Step 3: Cross multiply
89,879.36x = 134,714.07 × 67,621.23 - Step 4: Simplify right side
89,879.36x = 9,109,531,111.71 - Step 5: Solve for x
x = 9,109,531,111.71/89,879.36 - Step 6: Final answer
x = 101,352.88
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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.