Finding the Fourth Proportional to 72,145,219.14, 99,566,700.99 and 39,556,469.70
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Solution
The fourth proportional to 72,145,219.14, 99,566,700.99 and 39,556,469.70 is: 54,591,381.63
Step by Step Solution
- Step 1: Write the proportion equation
72,145,219.14 : 99,566,700.99 = 39,556,469.70 : x - Step 2: Convert to fraction form
72,145,219.14/99,566,700.99 = 39,556,469.70/x - Step 3: Cross multiply
72,145,219.14x = 99,566,700.99 × 39,556,469.70 - Step 4: Simplify right side
72,145,219.14x = 3,938,507,190,839,895 - Step 5: Solve for x
x = 3,938,507,190,839,895/72,145,219.14 - Step 6: Final answer
x = 54,591,381.63
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.