Finding the Fourth Proportional to 78,398,844.20, 117,598,266.30 and 44,386,620.20
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Solution
The fourth proportional to 78,398,844.20, 117,598,266.30 and 44,386,620.20 is: 66,579,930.30
Step by Step Solution
- Step 1: Write the proportion equation
78,398,844.20 : 117,598,266.30 = 44,386,620.20 : x - Step 2: Convert to fraction form
78,398,844.20/117,598,266.30 = 44,386,620.20/x - Step 3: Cross multiply
78,398,844.20x = 117,598,266.30 × 44,386,620.20 - Step 4: Simplify right side
78,398,844.20x = 5,219,789,582,436,559 - Step 5: Solve for x
x = 5,219,789,582,436,559/78,398,844.20 - Step 6: Final answer
x = 66,579,930.30
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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.