Home / 70,828.12-106,217.42-20,894.96

Finding the Fourth Proportional to 70,828.12, 106,217.42 and 20,894.96

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Solution

The fourth proportional to 70,828.12, 106,217.42 and 20,894.96 is: 31,335.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,828.12 : 106,217.42 = 20,894.96 : x
  2. Step 2: Convert to fraction form
    70,828.12/106,217.42 = 20,894.96/x
  3. Step 3: Cross multiply
    70,828.12x = 106,217.42 × 20,894.96
  4. Step 4: Simplify right side
    70,828.12x = 2,219,408,637.73
  5. Step 5: Solve for x
    x = 2,219,408,637.73/70,828.12
  6. Step 6: Final answer
    x = 31,335.14

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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.