Finding the Fourth Proportional to 101,638.91, 140,272.08 and 58,620.08
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Solution
The fourth proportional to 101,638.91, 140,272.08 and 58,620.08 is: 80,901.70
Step by Step Solution
- Step 1: Write the proportion equation
101,638.91 : 140,272.08 = 58,620.08 : x - Step 2: Convert to fraction form
101,638.91/140,272.08 = 58,620.08/x - Step 3: Cross multiply
101,638.91x = 140,272.08 × 58,620.08 - Step 4: Simplify right side
101,638.91x = 8,222,760,551.37 - Step 5: Solve for x
x = 8,222,760,551.37/101,638.91 - Step 6: Final answer
x = 80,901.70
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.