Finding the Fourth Proportional to 70,872.80, 106,163.40 and 48,711.20
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Solution
The fourth proportional to 70,872.80, 106,163.40 and 48,711.20 is: 72,966.59
Step by Step Solution
- Step 1: Write the proportion equation
70,872.80 : 106,163.40 = 48,711.20 : x - Step 2: Convert to fraction form
70,872.80/106,163.40 = 48,711.20/x - Step 3: Cross multiply
70,872.80x = 106,163.40 × 48,711.20 - Step 4: Simplify right side
70,872.80x = 5,171,346,610.08 - Step 5: Solve for x
x = 5,171,346,610.08/70,872.80 - Step 6: Final answer
x = 72,966.59
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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.