Finding the Fourth Proportional to 80,919,518.80, 121,379,278.20 and 80,352,648.40
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Solution
The fourth proportional to 80,919,518.80, 121,379,278.20 and 80,352,648.40 is: 120,528,972.60
Step by Step Solution
- Step 1: Write the proportion equation
80,919,518.80 : 121,379,278.20 = 80,352,648.40 : x - Step 2: Convert to fraction form
80,919,518.80/121,379,278.20 = 80,352,648.40/x - Step 3: Cross multiply
80,919,518.80x = 121,379,278.20 × 80,352,648.40 - Step 4: Simplify right side
80,919,518.80x = 9,753,146,464,250,386 - Step 5: Solve for x
x = 9,753,146,464,250,386/80,919,518.80 - Step 6: Final answer
x = 120,528,972.60
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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.