Finding the Fourth Proportional to 19,991,212.20, 29,983,707.90 and 5,612,869.80
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Solution
The fourth proportional to 19,991,212.20, 29,983,707.90 and 5,612,869.80 is: 8,418,431.40
Step by Step Solution
- Step 1: Write the proportion equation
19,991,212.20 : 29,983,707.90 = 5,612,869.80 : x - Step 2: Convert to fraction form
19,991,212.20/29,983,707.90 = 5,612,869.80/x - Step 3: Cross multiply
19,991,212.20x = 29,983,707.90 × 5,612,869.80 - Step 4: Simplify right side
19,991,212.20x = 168,294,648,563,931.41 - Step 5: Solve for x
x = 168,294,648,563,931.41/19,991,212.20 - Step 6: Final answer
x = 8,418,431.40
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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.