Finding the Fourth Proportional to 12,143,199.81, 18,212,117.40 and 3,505,422.99
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Solution
The fourth proportional to 12,143,199.81, 18,212,117.40 and 3,505,422.99 is: 5,257,360.17
Step by Step Solution
- Step 1: Write the proportion equation
12,143,199.81 : 18,212,117.40 = 3,505,422.99 : x - Step 2: Convert to fraction form
12,143,199.81/18,212,117.40 = 3,505,422.99/x - Step 3: Cross multiply
12,143,199.81x = 18,212,117.40 × 3,505,422.99 - Step 4: Simplify right side
12,143,199.81x = 63,841,175,030,539.02 - Step 5: Solve for x
x = 63,841,175,030,539.02/12,143,199.81 - Step 6: Final answer
x = 5,257,360.17
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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.