Home / 81,819.18-122,715.10-22,660.84

Finding the Fourth Proportional to 81,819.18, 122,715.10 and 22,660.84

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Solution

The fourth proportional to 81,819.18, 122,715.10 and 22,660.84 is: 33,987.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,819.18 : 122,715.10 = 22,660.84 : x
  2. Step 2: Convert to fraction form
    81,819.18/122,715.10 = 22,660.84/x
  3. Step 3: Cross multiply
    81,819.18x = 122,715.10 × 22,660.84
  4. Step 4: Simplify right side
    81,819.18x = 2,780,827,246.68
  5. Step 5: Solve for x
    x = 2,780,827,246.68/81,819.18
  6. Step 6: Final answer
    x = 33,987.47

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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.