Home / 81,986.22-122,983.76-25,830.74

Finding the Fourth Proportional to 81,986.22, 122,983.76 and 25,830.74

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Solution

The fourth proportional to 81,986.22, 122,983.76 and 25,830.74 is: 38,747.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,986.22 : 122,983.76 = 25,830.74 : x
  2. Step 2: Convert to fraction form
    81,986.22/122,983.76 = 25,830.74/x
  3. Step 3: Cross multiply
    81,986.22x = 122,983.76 × 25,830.74
  4. Step 4: Simplify right side
    81,986.22x = 3,176,761,528.78
  5. Step 5: Solve for x
    x = 3,176,761,528.78/81,986.22
  6. Step 6: Final answer
    x = 38,747.51

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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.