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Finding the Fourth Proportional to 47,270.20, 70,905.30 and 19,203.70

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Solution

The fourth proportional to 47,270.20, 70,905.30 and 19,203.70 is: 28,805.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,270.20 : 70,905.30 = 19,203.70 : x
  2. Step 2: Convert to fraction form
    47,270.20/70,905.30 = 19,203.70/x
  3. Step 3: Cross multiply
    47,270.20x = 70,905.30 × 19,203.70
  4. Step 4: Simplify right side
    47,270.20x = 1,361,644,109.61
  5. Step 5: Solve for x
    x = 1,361,644,109.61/47,270.20
  6. Step 6: Final answer
    x = 28,805.55

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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.