Home / 70,828.37-106,217.79-20,895.21

Finding the Fourth Proportional to 70,828.37, 106,217.79 and 20,895.21

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Solution

The fourth proportional to 70,828.37, 106,217.79 and 20,895.21 is: 31,335.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,828.37 : 106,217.79 = 20,895.21 : x
  2. Step 2: Convert to fraction form
    70,828.37/106,217.79 = 20,895.21/x
  3. Step 3: Cross multiply
    70,828.37x = 106,217.79 × 20,895.21
  4. Step 4: Simplify right side
    70,828.37x = 2,219,443,027.79
  5. Step 5: Solve for x
    x = 2,219,443,027.79/70,828.37
  6. Step 6: Final answer
    x = 31,335.51

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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.