Finding the Fourth Proportional to 31,672,808.20, 47,489,966.70 and 12,481,445.80
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Solution
The fourth proportional to 31,672,808.20, 47,489,966.70 and 12,481,445.80 is: 18,714,584.50
Step by Step Solution
- Step 1: Write the proportion equation
31,672,808.20 : 47,489,966.70 = 12,481,445.80 : x - Step 2: Convert to fraction form
31,672,808.20/47,489,966.70 = 12,481,445.80/x - Step 3: Cross multiply
31,672,808.20x = 47,489,966.70 × 12,481,445.80 - Step 4: Simplify right side
31,672,808.20x = 592,743,445,409,854.88 - Step 5: Solve for x
x = 592,743,445,409,854.88/31,672,808.20 - Step 6: Final answer
x = 18,714,584.50
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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.