Home / 70,890.58-106,351.44-20,966.78

Finding the Fourth Proportional to 70,890.58, 106,351.44 and 20,966.78

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Solution

The fourth proportional to 70,890.58, 106,351.44 and 20,966.78 is: 31,454.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,890.58 : 106,351.44 = 20,966.78 : x
  2. Step 2: Convert to fraction form
    70,890.58/106,351.44 = 20,966.78/x
  3. Step 3: Cross multiply
    70,890.58x = 106,351.44 × 20,966.78
  4. Step 4: Simplify right side
    70,890.58x = 2,229,847,245.16
  5. Step 5: Solve for x
    x = 2,229,847,245.16/70,890.58
  6. Step 6: Final answer
    x = 31,454.78

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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.