Finding the Fourth Proportional to 74,436,373.98, 111,639,841.65 and 70,745,169.96
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Solution
The fourth proportional to 74,436,373.98, 111,639,841.65 and 70,745,169.96 is: 106,103,765.53
Step by Step Solution
- Step 1: Write the proportion equation
74,436,373.98 : 111,639,841.65 = 70,745,169.96 : x - Step 2: Convert to fraction form
74,436,373.98/111,639,841.65 = 70,745,169.96/x - Step 3: Cross multiply
74,436,373.98x = 111,639,841.65 × 70,745,169.96 - Step 4: Simplify right side
74,436,373.98x = 7,897,979,571,836,737 - Step 5: Solve for x
x = 7,897,979,571,836,737/74,436,373.98 - Step 6: Final answer
x = 106,103,765.53
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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.