Finding the Fourth Proportional to 54,438,351.40, 81,421,331.10 and 48,722,408.20
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Solution
The fourth proportional to 54,438,351.40, 81,421,331.10 and 48,722,408.20 is: 72,872,216.52
Step by Step Solution
- Step 1: Write the proportion equation
54,438,351.40 : 81,421,331.10 = 48,722,408.20 : x - Step 2: Convert to fraction form
54,438,351.40/81,421,331.10 = 48,722,408.20/x - Step 3: Cross multiply
54,438,351.40x = 81,421,331.10 × 48,722,408.20 - Step 4: Simplify right side
54,438,351.40x = 3,967,043,330,041,555 - Step 5: Solve for x
x = 3,967,043,330,041,555/54,438,351.40 - Step 6: Final answer
x = 72,872,216.52
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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.