Finding the Fourth Proportional to 81,490,178.20, 122,235,267.30 and 49,125,421.30
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Solution
The fourth proportional to 81,490,178.20, 122,235,267.30 and 49,125,421.30 is: 73,688,131.95
Step by Step Solution
- Step 1: Write the proportion equation
81,490,178.20 : 122,235,267.30 = 49,125,421.30 : x - Step 2: Convert to fraction form
81,490,178.20/122,235,267.30 = 49,125,421.30/x - Step 3: Cross multiply
81,490,178.20x = 122,235,267.30 × 49,125,421.30 - Step 4: Simplify right side
81,490,178.20x = 6,004,859,003,830,613 - Step 5: Solve for x
x = 6,004,859,003,830,613/81,490,178.20 - Step 6: Final answer
x = 73,688,131.95
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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.