Home / 57,704.72-86,560.28-28,147.76

Finding the Fourth Proportional to 57,704.72, 86,560.28 and 28,147.76

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Solution

The fourth proportional to 57,704.72, 86,560.28 and 28,147.76 is: 42,223.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,704.72 : 86,560.28 = 28,147.76 : x
  2. Step 2: Convert to fraction form
    57,704.72/86,560.28 = 28,147.76/x
  3. Step 3: Cross multiply
    57,704.72x = 86,560.28 × 28,147.76
  4. Step 4: Simplify right side
    57,704.72x = 2,436,477,986.97
  5. Step 5: Solve for x
    x = 2,436,477,986.97/57,704.72
  6. Step 6: Final answer
    x = 42,223.20

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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.