Finding the Fourth Proportional to 74,887,635.20, 112,331,452.80 and 66,384,579.20
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Solution
The fourth proportional to 74,887,635.20, 112,331,452.80 and 66,384,579.20 is: 99,576,868.80
Step by Step Solution
- Step 1: Write the proportion equation
74,887,635.20 : 112,331,452.80 = 66,384,579.20 : x - Step 2: Convert to fraction form
74,887,635.20/112,331,452.80 = 66,384,579.20/x - Step 3: Cross multiply
74,887,635.20x = 112,331,452.80 × 66,384,579.20 - Step 4: Simplify right side
74,887,635.20x = 7,457,076,225,052,662 - Step 5: Solve for x
x = 7,457,076,225,052,662/74,887,635.20 - Step 6: Final answer
x = 99,576,868.80
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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.