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Finding the Fourth Proportional to 70,773.89, 106,124.06 and 20,847.40

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Solution

The fourth proportional to 70,773.89, 106,124.06 and 20,847.40 is: 31,260.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,773.89 : 106,124.06 = 20,847.40 : x
  2. Step 2: Convert to fraction form
    70,773.89/106,124.06 = 20,847.40/x
  3. Step 3: Cross multiply
    70,773.89x = 106,124.06 × 20,847.40
  4. Step 4: Simplify right side
    70,773.89x = 2,212,410,515.25
  5. Step 5: Solve for x
    x = 2,212,410,515.25/70,773.89
  6. Step 6: Final answer
    x = 31,260.27

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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.