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Finding the Fourth Proportional to 47,996.80, 72,017.40 and 18,404.80

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Solution

The fourth proportional to 47,996.80, 72,017.40 and 18,404.80 is: 27,615.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,996.80 : 72,017.40 = 18,404.80 : x
  2. Step 2: Convert to fraction form
    47,996.80/72,017.40 = 18,404.80/x
  3. Step 3: Cross multiply
    47,996.80x = 72,017.40 × 18,404.80
  4. Step 4: Simplify right side
    47,996.80x = 1,325,465,843.52
  5. Step 5: Solve for x
    x = 1,325,465,843.52/47,996.80
  6. Step 6: Final answer
    x = 27,615.71

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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.