Finding the Fourth Proportional to 70,725.18, 106,091.55 and 18,135.12
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Solution
The fourth proportional to 70,725.18, 106,091.55 and 18,135.12 is: 27,203.65
Step by Step Solution
- Step 1: Write the proportion equation
70,725.18 : 106,091.55 = 18,135.12 : x - Step 2: Convert to fraction form
70,725.18/106,091.55 = 18,135.12/x - Step 3: Cross multiply
70,725.18x = 106,091.55 × 18,135.12 - Step 4: Simplify right side
70,725.18x = 1,923,982,990.24 - Step 5: Solve for x
x = 1,923,982,990.24/70,725.18 - Step 6: Final answer
x = 27,203.65
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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.