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Finding the Fourth Proportional to 47,604.60, 71,406.90 and 30,108.60

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Solution

The fourth proportional to 47,604.60, 71,406.90 and 30,108.60 is: 45,162.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,604.60 : 71,406.90 = 30,108.60 : x
  2. Step 2: Convert to fraction form
    47,604.60/71,406.90 = 30,108.60/x
  3. Step 3: Cross multiply
    47,604.60x = 71,406.90 × 30,108.60
  4. Step 4: Simplify right side
    47,604.60x = 2,149,961,789.34
  5. Step 5: Solve for x
    x = 2,149,961,789.34/47,604.60
  6. Step 6: Final answer
    x = 45,162.90

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1.5x scale

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.