Finding the Fourth Proportional to 100,671.24, 138,928.02 and 55,351.08
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Solution
The fourth proportional to 100,671.24, 138,928.02 and 55,351.08 is: 76,385.43
Step by Step Solution
- Step 1: Write the proportion equation
100,671.24 : 138,928.02 = 55,351.08 : x - Step 2: Convert to fraction form
100,671.24/138,928.02 = 55,351.08/x - Step 3: Cross multiply
100,671.24x = 138,928.02 × 55,351.08 - Step 4: Simplify right side
100,671.24x = 7,689,815,949.26 - Step 5: Solve for x
x = 7,689,815,949.26/100,671.24 - Step 6: Final answer
x = 76,385.43
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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.