Finding the Fourth Proportional to 78,914,977.20, 118,372,465.80 and 44,902,753.20
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Solution
The fourth proportional to 78,914,977.20, 118,372,465.80 and 44,902,753.20 is: 67,354,129.80
Step by Step Solution
- Step 1: Write the proportion equation
78,914,977.20 : 118,372,465.80 = 44,902,753.20 : x - Step 2: Convert to fraction form
78,914,977.20/118,372,465.80 = 44,902,753.20/x - Step 3: Cross multiply
78,914,977.20x = 118,372,465.80 × 44,902,753.20 - Step 4: Simplify right side
78,914,977.20x = 5,315,249,617,492,841 - Step 5: Solve for x
x = 5,315,249,617,492,841/78,914,977.20 - Step 6: Final answer
x = 67,354,129.80
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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.