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Finding the Fourth Proportional to 47,250.70, 70,908.45 and 20,974.30

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Solution

The fourth proportional to 47,250.70, 70,908.45 and 20,974.30 is: 31,475.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,250.70 : 70,908.45 = 20,974.30 : x
  2. Step 2: Convert to fraction form
    47,250.70/70,908.45 = 20,974.30/x
  3. Step 3: Cross multiply
    47,250.70x = 70,908.45 × 20,974.30
  4. Step 4: Simplify right side
    47,250.70x = 1,487,255,102.84
  5. Step 5: Solve for x
    x = 1,487,255,102.84/47,250.70
  6. Step 6: Final answer
    x = 31,475.83

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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.