Finding the Fourth Proportional to 78,964,469.97, 108,934,254.09 and 51,096,178.68
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Solution
The fourth proportional to 78,964,469.97, 108,934,254.09 and 51,096,178.68 is: 70,488,969.45
Step by Step Solution
- Step 1: Write the proportion equation
78,964,469.97 : 108,934,254.09 = 51,096,178.68 : x - Step 2: Convert to fraction form
78,964,469.97/108,934,254.09 = 51,096,178.68/x - Step 3: Cross multiply
78,964,469.97x = 108,934,254.09 × 51,096,178.68 - Step 4: Simplify right side
78,964,469.97x = 5,566,124,111,355,161 - Step 5: Solve for x
x = 5,566,124,111,355,161/78,964,469.97 - Step 6: Final answer
x = 70,488,969.45
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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.