Finding the Fourth Proportional to 83,621,000.20, 125,431,500.30 and 66,402,311.80
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Solution
The fourth proportional to 83,621,000.20, 125,431,500.30 and 66,402,311.80 is: 99,603,467.70
Step by Step Solution
- Step 1: Write the proportion equation
83,621,000.20 : 125,431,500.30 = 66,402,311.80 : x - Step 2: Convert to fraction form
83,621,000.20/125,431,500.30 = 66,402,311.80/x - Step 3: Cross multiply
83,621,000.20x = 125,431,500.30 × 66,402,311.80 - Step 4: Simplify right side
83,621,000.20x = 8,328,941,592,462,393 - Step 5: Solve for x
x = 8,328,941,592,462,393/83,621,000.20 - Step 6: Final answer
x = 99,603,467.70
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1.5x scale
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.