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Finding the Fourth Proportional to 47,390.40, 71,066.40 and 16,209.60

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Solution

The fourth proportional to 47,390.40, 71,066.40 and 16,209.60 is: 24,307.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,390.40 : 71,066.40 = 16,209.60 : x
  2. Step 2: Convert to fraction form
    47,390.40/71,066.40 = 16,209.60/x
  3. Step 3: Cross multiply
    47,390.40x = 71,066.40 × 16,209.60
  4. Step 4: Simplify right side
    47,390.40x = 1,151,957,917.44
  5. Step 5: Solve for x
    x = 1,151,957,917.44/47,390.40
  6. Step 6: Final answer
    x = 24,307.83

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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.