Finding the Fourth Proportional to 38,494,787.91, 57,742,919.99 and 12,587,186.79
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Solution
The fourth proportional to 38,494,787.91, 57,742,919.99 and 12,587,186.79 is: 18,881,021.54
Step by Step Solution
- Step 1: Write the proportion equation
38,494,787.91 : 57,742,919.99 = 12,587,186.79 : x - Step 2: Convert to fraction form
38,494,787.91/57,742,919.99 = 12,587,186.79/x - Step 3: Cross multiply
38,494,787.91x = 57,742,919.99 × 12,587,186.79 - Step 4: Simplify right side
38,494,787.91x = 726,820,919,651,219 - Step 5: Solve for x
x = 726,820,919,651,219/38,494,787.91 - Step 6: Final answer
x = 18,881,021.54
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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.