Finding the Fourth Proportional to 80,919,073.80, 121,378,610.70 and 80,352,203.40
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Solution
The fourth proportional to 80,919,073.80, 121,378,610.70 and 80,352,203.40 is: 120,528,305.10
Step by Step Solution
- Step 1: Write the proportion equation
80,919,073.80 : 121,378,610.70 = 80,352,203.40 : x - Step 2: Convert to fraction form
80,919,073.80/121,378,610.70 = 80,352,203.40/x - Step 3: Cross multiply
80,919,073.80x = 121,378,610.70 × 80,352,203.40 - Step 4: Simplify right side
80,919,073.80x = 9,753,038,815,375,818 - Step 5: Solve for x
x = 9,753,038,815,375,818/80,919,073.80 - Step 6: Final answer
x = 120,528,305.10
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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.