Finding the Fourth Proportional to 81,097,768.76, 121,652,327.39 and 40,146,212.49
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Solution
The fourth proportional to 81,097,768.76, 121,652,327.39 and 40,146,212.49 is: 60,222,127.69
Step by Step Solution
- Step 1: Write the proportion equation
81,097,768.76 : 121,652,327.39 = 40,146,212.49 : x - Step 2: Convert to fraction form
81,097,768.76/121,652,327.39 = 40,146,212.49/x - Step 3: Cross multiply
81,097,768.76x = 121,652,327.39 × 40,146,212.49 - Step 4: Simplify right side
81,097,768.76x = 4,883,880,185,101,257 - Step 5: Solve for x
x = 4,883,880,185,101,257/81,097,768.76 - Step 6: Final answer
x = 60,222,127.69
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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.