Home / 85,960.20-128,934.36-26,790.24

Finding the Fourth Proportional to 85,960.20, 128,934.36 and 26,790.24

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Solution

The fourth proportional to 85,960.20, 128,934.36 and 26,790.24 is: 40,183.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,960.20 : 128,934.36 = 26,790.24 : x
  2. Step 2: Convert to fraction form
    85,960.20/128,934.36 = 26,790.24/x
  3. Step 3: Cross multiply
    85,960.20x = 128,934.36 × 26,790.24
  4. Step 4: Simplify right side
    85,960.20x = 3,454,182,448.65
  5. Step 5: Solve for x
    x = 3,454,182,448.65/85,960.20
  6. Step 6: Final answer
    x = 40,183.51

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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.