Finding the Fourth Proportional to 78,398,845.20, 117,598,267.80 and 44,386,621.20
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Solution
The fourth proportional to 78,398,845.20, 117,598,267.80 and 44,386,621.20 is: 66,579,931.80
Step by Step Solution
- Step 1: Write the proportion equation
78,398,845.20 : 117,598,267.80 = 44,386,621.20 : x - Step 2: Convert to fraction form
78,398,845.20/117,598,267.80 = 44,386,621.20/x - Step 3: Cross multiply
78,398,845.20x = 117,598,267.80 × 44,386,621.20 - Step 4: Simplify right side
78,398,845.20x = 5,219,789,766,614,758 - Step 5: Solve for x
x = 5,219,789,766,614,758/78,398,845.20 - Step 6: Final answer
x = 66,579,931.80
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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.