Home / 90,147.91-124,395.75-49,860.80

Finding the Fourth Proportional to 90,147.91, 124,395.75 and 49,860.80

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Solution

The fourth proportional to 90,147.91, 124,395.75 and 49,860.80 is: 68,803.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,147.91 : 124,395.75 = 49,860.80 : x
  2. Step 2: Convert to fraction form
    90,147.91/124,395.75 = 49,860.80/x
  3. Step 3: Cross multiply
    90,147.91x = 124,395.75 × 49,860.80
  4. Step 4: Simplify right side
    90,147.91x = 6,202,471,797.94
  5. Step 5: Solve for x
    x = 6,202,471,797.94/90,147.91
  6. Step 6: Final answer
    x = 68,803.28

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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.