Finding the Fourth Proportional to 87,732,396.80, 131,598,595.20 and 85,212,972.80
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Solution
The fourth proportional to 87,732,396.80, 131,598,595.20 and 85,212,972.80 is: 127,819,459.20
Step by Step Solution
- Step 1: Write the proportion equation
87,732,396.80 : 131,598,595.20 = 85,212,972.80 : x - Step 2: Convert to fraction form
87,732,396.80/131,598,595.20 = 85,212,972.80/x - Step 3: Cross multiply
87,732,396.80x = 131,598,595.20 × 85,212,972.80 - Step 4: Simplify right side
87,732,396.80x = 11,213,907,513,295,810 - Step 5: Solve for x
x = 11,213,907,513,295,810/87,732,396.80 - Step 6: Final answer
x = 127,819,459.20
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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.