Finding the Fourth Proportional to 56,137,477.70, 77,469,839.28 and 31,691,191.70
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Solution
The fourth proportional to 56,137,477.70, 77,469,839.28 and 31,691,191.70 is: 43,733,912.32
Step by Step Solution
- Step 1: Write the proportion equation
56,137,477.70 : 77,469,839.28 = 31,691,191.70 : x - Step 2: Convert to fraction form
56,137,477.70/77,469,839.28 = 31,691,191.70/x - Step 3: Cross multiply
56,137,477.70x = 77,469,839.28 × 31,691,191.70 - Step 4: Simplify right side
56,137,477.70x = 2,455,111,527,203,321 - Step 5: Solve for x
x = 2,455,111,527,203,321/56,137,477.70 - Step 6: Final answer
x = 43,733,912.32
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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.