Home / 80,471.36-120,704.98-38,381.20

Finding the Fourth Proportional to 80,471.36, 120,704.98 and 38,381.20

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Solution

The fourth proportional to 80,471.36, 120,704.98 and 38,381.20 is: 57,570.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,471.36 : 120,704.98 = 38,381.20 : x
  2. Step 2: Convert to fraction form
    80,471.36/120,704.98 = 38,381.20/x
  3. Step 3: Cross multiply
    80,471.36x = 120,704.98 × 38,381.20
  4. Step 4: Simplify right side
    80,471.36x = 4,632,801,978.38
  5. Step 5: Solve for x
    x = 4,632,801,978.38/80,471.36
  6. Step 6: Final answer
    x = 57,570.82

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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.