Finding the Fourth Proportional to 66,472,389.23, 91,747,202.64 and 38,979,174.83
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Solution
The fourth proportional to 66,472,389.23, 91,747,202.64 and 38,979,174.83 is: 53,800,236.36
Step by Step Solution
- Step 1: Write the proportion equation
66,472,389.23 : 91,747,202.64 = 38,979,174.83 : x - Step 2: Convert to fraction form
66,472,389.23/91,747,202.64 = 38,979,174.83/x - Step 3: Cross multiply
66,472,389.23x = 91,747,202.64 × 38,979,174.83 - Step 4: Simplify right side
66,472,389.23x = 3,576,230,251,888,763 - Step 5: Solve for x
x = 3,576,230,251,888,763/66,472,389.23 - Step 6: Final answer
x = 53,800,236.36
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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.