Finding the Fourth Proportional to 78,701,489.84, 117,269,834.14 and 70,115,852.72
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Solution
The fourth proportional to 78,701,489.84, 117,269,834.14 and 70,115,852.72 is: 104,476,731.45
Step by Step Solution
- Step 1: Write the proportion equation
78,701,489.84 : 117,269,834.14 = 70,115,852.72 : x - Step 2: Convert to fraction form
78,701,489.84/117,269,834.14 = 70,115,852.72/x - Step 3: Cross multiply
78,701,489.84x = 117,269,834.14 × 70,115,852.72 - Step 4: Simplify right side
78,701,489.84x = 8,222,474,419,059,068 - Step 5: Solve for x
x = 8,222,474,419,059,068/78,701,489.84 - Step 6: Final answer
x = 104,476,731.45
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.