Finding the Fourth Proportional to 66,472,392.05, 91,747,206.53 and 38,979,177.65
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Solution
The fourth proportional to 66,472,392.05, 91,747,206.53 and 38,979,177.65 is: 53,800,240.25
Step by Step Solution
- Step 1: Write the proportion equation
66,472,392.05 : 91,747,206.53 = 38,979,177.65 : x - Step 2: Convert to fraction form
66,472,392.05/91,747,206.53 = 38,979,177.65/x - Step 3: Cross multiply
66,472,392.05x = 91,747,206.53 × 38,979,177.65 - Step 4: Simplify right side
66,472,392.05x = 3,576,230,662,060,702 - Step 5: Solve for x
x = 3,576,230,662,060,702/66,472,392.05 - Step 6: Final answer
x = 53,800,240.25
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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.