Finding the Fourth Proportional to 81,490,179.70, 122,235,269.55 and 49,125,422.80
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Solution
The fourth proportional to 81,490,179.70, 122,235,269.55 and 49,125,422.80 is: 73,688,134.20
Step by Step Solution
- Step 1: Write the proportion equation
81,490,179.70 : 122,235,269.55 = 49,125,422.80 : x - Step 2: Convert to fraction form
81,490,179.70/122,235,269.55 = 49,125,422.80/x - Step 3: Cross multiply
81,490,179.70x = 122,235,269.55 × 49,125,422.80 - Step 4: Simplify right side
81,490,179.70x = 6,004,859,297,715,715 - Step 5: Solve for x
x = 6,004,859,297,715,715/81,490,179.70 - Step 6: Final answer
x = 73,688,134.20
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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.