Finding the Fourth Proportional to 66,472,422.93, 91,747,249.16 and 38,979,208.53
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Solution
The fourth proportional to 66,472,422.93, 91,747,249.16 and 38,979,208.53 is: 53,800,282.87
Step by Step Solution
- Step 1: Write the proportion equation
66,472,422.93 : 91,747,249.16 = 38,979,208.53 : x - Step 2: Convert to fraction form
66,472,422.93/91,747,249.16 = 38,979,208.53/x - Step 3: Cross multiply
66,472,422.93x = 91,747,249.16 × 38,979,208.53 - Step 4: Simplify right side
66,472,422.93x = 3,576,235,156,866,611.50 - Step 5: Solve for x
x = 3,576,235,156,866,611.50/66,472,422.93 - Step 6: Final answer
x = 53,800,282.87
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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.