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Finding the Fourth Proportional to 47,660.76, 71,494.56 and 12,600

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Solution

The fourth proportional to 47,660.76, 71,494.56 and 12,600 is: 18,900.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,660.76 : 71,494.56 = 12,600 : x
  2. Step 2: Convert to fraction form
    47,660.76/71,494.56 = 12,600/x
  3. Step 3: Cross multiply
    47,660.76x = 71,494.56 × 12,600
  4. Step 4: Simplify right side
    47,660.76x = 900,831,456
  5. Step 5: Solve for x
    x = 900,831,456/47,660.76
  6. Step 6: Final answer
    x = 18,900.90

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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.