Finding the Fourth Proportional to 66,472,391.74, 91,747,206.09 and 38,979,177.34
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Solution
The fourth proportional to 66,472,391.74, 91,747,206.09 and 38,979,177.34 is: 53,800,239.81
Step by Step Solution
- Step 1: Write the proportion equation
66,472,391.74 : 91,747,206.09 = 38,979,177.34 : x - Step 2: Convert to fraction form
66,472,391.74/91,747,206.09 = 38,979,177.34/x - Step 3: Cross multiply
66,472,391.74x = 91,747,206.09 × 38,979,177.34 - Step 4: Simplify right side
66,472,391.74x = 3,576,230,616,631,638.50 - Step 5: Solve for x
x = 3,576,230,616,631,638.50/66,472,391.74 - Step 6: Final answer
x = 53,800,239.81
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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.