Finding the Fourth Proportional to 20,762,949.60, 31,146,757.20 and 6,385,903.20
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Solution
The fourth proportional to 20,762,949.60, 31,146,757.20 and 6,385,903.20 is: 9,579,572.28
Step by Step Solution
- Step 1: Write the proportion equation
20,762,949.60 : 31,146,757.20 = 6,385,903.20 : x - Step 2: Convert to fraction form
20,762,949.60/31,146,757.20 = 6,385,903.20/x - Step 3: Cross multiply
20,762,949.60x = 31,146,757.20 × 6,385,903.20 - Step 4: Simplify right side
20,762,949.60x = 198,900,176,473,103.03 - Step 5: Solve for x
x = 198,900,176,473,103.03/20,762,949.60 - Step 6: Final answer
x = 9,579,572.28
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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.