Finding the Fourth Proportional to 66,429,863.70, 99,686,785.95 and 39,136,103.70
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Solution
The fourth proportional to 66,429,863.70, 99,686,785.95 and 39,136,103.70 is: 58,728,893.53
Step by Step Solution
- Step 1: Write the proportion equation
66,429,863.70 : 99,686,785.95 = 39,136,103.70 : x - Step 2: Convert to fraction form
66,429,863.70/99,686,785.95 = 39,136,103.70/x - Step 3: Cross multiply
66,429,863.70x = 99,686,785.95 × 39,136,103.70 - Step 4: Simplify right side
66,429,863.70x = 3,901,352,392,458,903.50 - Step 5: Solve for x
x = 3,901,352,392,458,903.50/66,429,863.70 - Step 6: Final answer
x = 58,728,893.53
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.