Finding the Fourth Proportional to 77,278,664.40, 115,917,996.60 and 50,068,885.20
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Solution
The fourth proportional to 77,278,664.40, 115,917,996.60 and 50,068,885.20 is: 75,103,327.80
Step by Step Solution
- Step 1: Write the proportion equation
77,278,664.40 : 115,917,996.60 = 50,068,885.20 : x - Step 2: Convert to fraction form
77,278,664.40/115,917,996.60 = 50,068,885.20/x - Step 3: Cross multiply
77,278,664.40x = 115,917,996.60 × 50,068,885.20 - Step 4: Simplify right side
77,278,664.40x = 5,803,884,864,379,390 - Step 5: Solve for x
x = 5,803,884,864,379,390/77,278,664.40 - Step 6: Final answer
x = 75,103,327.80
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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.