Finding the Fourth Proportional to 55,517,629.21, 76,619,469.40 and 30,737,816.28
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Solution
The fourth proportional to 55,517,629.21, 76,619,469.40 and 30,737,816.28 is: 42,421,032.88
Step by Step Solution
- Step 1: Write the proportion equation
55,517,629.21 : 76,619,469.40 = 30,737,816.28 : x - Step 2: Convert to fraction form
55,517,629.21/76,619,469.40 = 30,737,816.28/x - Step 3: Cross multiply
55,517,629.21x = 76,619,469.40 × 30,737,816.28 - Step 4: Simplify right side
55,517,629.21x = 2,355,115,173,811,437 - Step 5: Solve for x
x = 2,355,115,173,811,437/55,517,629.21 - Step 6: Final answer
x = 42,421,032.88
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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.