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Finding the Fourth Proportional to 48,605.52, 72,905.85 and 19,028.78

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Solution

The fourth proportional to 48,605.52, 72,905.85 and 19,028.78 is: 28,542.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,605.52 : 72,905.85 = 19,028.78 : x
  2. Step 2: Convert to fraction form
    48,605.52/72,905.85 = 19,028.78/x
  3. Step 3: Cross multiply
    48,605.52x = 72,905.85 × 19,028.78
  4. Step 4: Simplify right side
    48,605.52x = 1,387,309,289.23
  5. Step 5: Solve for x
    x = 1,387,309,289.23/48,605.52
  6. Step 6: Final answer
    x = 28,542.21

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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.