Finding the Fourth Proportional to 87,915,109.97, 121,330,114.76 and 48,769,507.73
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Solution
The fourth proportional to 87,915,109.97, 121,330,114.76 and 48,769,507.73 is: 67,305,949.70
Step by Step Solution
- Step 1: Write the proportion equation
87,915,109.97 : 121,330,114.76 = 48,769,507.73 : x - Step 2: Convert to fraction form
87,915,109.97/121,330,114.76 = 48,769,507.73/x - Step 3: Cross multiply
87,915,109.97x = 121,330,114.76 × 48,769,507.73 - Step 4: Simplify right side
87,915,109.97x = 5,917,209,969,669,607 - Step 5: Solve for x
x = 5,917,209,969,669,607/87,915,109.97 - Step 6: Final answer
x = 67,305,949.70
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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.