Finding the Fourth Proportional to 70,738,639.12, 106,107,949.68 and 19,620,657.64
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Solution
The fourth proportional to 70,738,639.12, 106,107,949.68 and 19,620,657.64 is: 29,430,983.96
Step by Step Solution
- Step 1: Write the proportion equation
70,738,639.12 : 106,107,949.68 = 19,620,657.64 : x - Step 2: Convert to fraction form
70,738,639.12/106,107,949.68 = 19,620,657.64/x - Step 3: Cross multiply
70,738,639.12x = 106,107,949.68 × 19,620,657.64 - Step 4: Simplify right side
70,738,639.12x = 2,081,907,753,553,627.75 - Step 5: Solve for x
x = 2,081,907,753,553,627.75/70,738,639.12 - Step 6: Final answer
x = 29,430,983.96
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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.