Finding the Fourth Proportional to 70,982,447.12, 97,956,072.21 and 38,387,399.12
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Solution
The fourth proportional to 70,982,447.12, 97,956,072.21 and 38,387,399.12 is: 52,974,770.42
Step by Step Solution
- Step 1: Write the proportion equation
70,982,447.12 : 97,956,072.21 = 38,387,399.12 : x - Step 2: Convert to fraction form
70,982,447.12/97,956,072.21 = 38,387,399.12/x - Step 3: Cross multiply
70,982,447.12x = 97,956,072.21 × 38,387,399.12 - Step 4: Simplify right side
70,982,447.12x = 3,760,278,840,152,810 - Step 5: Solve for x
x = 3,760,278,840,152,810/70,982,447.12 - Step 6: Final answer
x = 52,974,770.42
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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.