Home / 83,107.21-124,660.77-20,777.71

Finding the Fourth Proportional to 83,107.21, 124,660.77 and 20,777.71

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Solution

The fourth proportional to 83,107.21, 124,660.77 and 20,777.71 is: 31,166.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,107.21 : 124,660.77 = 20,777.71 : x
  2. Step 2: Convert to fraction form
    83,107.21/124,660.77 = 20,777.71/x
  3. Step 3: Cross multiply
    83,107.21x = 124,660.77 × 20,777.71
  4. Step 4: Simplify right side
    83,107.21x = 2,590,165,327.44
  5. Step 5: Solve for x
    x = 2,590,165,327.44/83,107.21
  6. Step 6: Final answer
    x = 31,166.55

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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.