Finding the Fourth Proportional to 71,331,271.80, 106,996,907.70 and 45,822,103.80
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Solution
The fourth proportional to 71,331,271.80, 106,996,907.70 and 45,822,103.80 is: 68,733,155.70
Step by Step Solution
- Step 1: Write the proportion equation
71,331,271.80 : 106,996,907.70 = 45,822,103.80 : x - Step 2: Convert to fraction form
71,331,271.80/106,996,907.70 = 45,822,103.80/x - Step 3: Cross multiply
71,331,271.80x = 106,996,907.70 × 45,822,103.80 - Step 4: Simplify right side
71,331,271.80x = 4,902,823,410,908,419 - Step 5: Solve for x
x = 4,902,823,410,908,419/71,331,271.80 - Step 6: Final answer
x = 68,733,155.70
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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.