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Finding the Fourth Proportional to 70,774.52, 106,150.20 and 20,842.96

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Solution

The fourth proportional to 70,774.52, 106,150.20 and 20,842.96 is: 31,261.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,774.52 : 106,150.20 = 20,842.96 : x
  2. Step 2: Convert to fraction form
    70,774.52/106,150.20 = 20,842.96/x
  3. Step 3: Cross multiply
    70,774.52x = 106,150.20 × 20,842.96
  4. Step 4: Simplify right side
    70,774.52x = 2,212,484,372.59
  5. Step 5: Solve for x
    x = 2,212,484,372.59/70,774.52
  6. Step 6: Final answer
    x = 31,261.03

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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.