Finding the Fourth Proportional to 72,448,431.80, 108,798,618.90 and 38,436,207.80
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Solution
The fourth proportional to 72,448,431.80, 108,798,618.90 and 38,436,207.80 is: 57,721,143.45
Step by Step Solution
- Step 1: Write the proportion equation
72,448,431.80 : 108,798,618.90 = 38,436,207.80 : x - Step 2: Convert to fraction form
72,448,431.80/108,798,618.90 = 38,436,207.80/x - Step 3: Cross multiply
72,448,431.80x = 108,798,618.90 × 38,436,207.80 - Step 4: Simplify right side
72,448,431.80x = 4,181,806,324,393,407.50 - Step 5: Solve for x
x = 4,181,806,324,393,407.50/72,448,431.80 - Step 6: Final answer
x = 57,721,143.45
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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.