Home / 49,867.21-68,780.49-30,721.58

Finding the Fourth Proportional to 49,867.21, 68,780.49 and 30,721.58

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Solution

The fourth proportional to 49,867.21, 68,780.49 and 30,721.58 is: 42,373.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,867.21 : 68,780.49 = 30,721.58 : x
  2. Step 2: Convert to fraction form
    49,867.21/68,780.49 = 30,721.58/x
  3. Step 3: Cross multiply
    49,867.21x = 68,780.49 × 30,721.58
  4. Step 4: Simplify right side
    49,867.21x = 2,113,044,982.07
  5. Step 5: Solve for x
    x = 2,113,044,982.07/49,867.21
  6. Step 6: Final answer
    x = 42,373.44

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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.