Home / 57,138.53-85,720.28-17,155.85

Finding the Fourth Proportional to 57,138.53, 85,720.28 and 17,155.85

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Solution

The fourth proportional to 57,138.53, 85,720.28 and 17,155.85 is: 25,737.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,138.53 : 85,720.28 = 17,155.85 : x
  2. Step 2: Convert to fraction form
    57,138.53/85,720.28 = 17,155.85/x
  3. Step 3: Cross multiply
    57,138.53x = 85,720.28 × 17,155.85
  4. Step 4: Simplify right side
    57,138.53x = 1,470,603,751.26
  5. Step 5: Solve for x
    x = 1,470,603,751.26/57,138.53
  6. Step 6: Final answer
    x = 25,737.52

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1.5x scale

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.