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Finding the Fourth Proportional to 47,103.60, 70,633.80 and 20,794.80

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Solution

The fourth proportional to 47,103.60, 70,633.80 and 20,794.80 is: 31,182.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,103.60 : 70,633.80 = 20,794.80 : x
  2. Step 2: Convert to fraction form
    47,103.60/70,633.80 = 20,794.80/x
  3. Step 3: Cross multiply
    47,103.60x = 70,633.80 × 20,794.80
  4. Step 4: Simplify right side
    47,103.60x = 1,468,815,744.24
  5. Step 5: Solve for x
    x = 1,468,815,744.24/47,103.60
  6. Step 6: Final answer
    x = 31,182.66

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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.