Home / 57,155.66-78,902.16-38,067.20

Finding the Fourth Proportional to 57,155.66, 78,902.16 and 38,067.20

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Solution

The fourth proportional to 57,155.66, 78,902.16 and 38,067.20 is: 52,550.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,155.66 : 78,902.16 = 38,067.20 : x
  2. Step 2: Convert to fraction form
    57,155.66/78,902.16 = 38,067.20/x
  3. Step 3: Cross multiply
    57,155.66x = 78,902.16 × 38,067.20
  4. Step 4: Simplify right side
    57,155.66x = 3,003,584,305.15
  5. Step 5: Solve for x
    x = 3,003,584,305.15/57,155.66
  6. Step 6: Final answer
    x = 52,550.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.