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Finding the Fourth Proportional to 48,532.40, 72,809.40 and 18,947.60

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Solution

The fourth proportional to 48,532.40, 72,809.40 and 18,947.60 is: 28,425.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,532.40 : 72,809.40 = 18,947.60 : x
  2. Step 2: Convert to fraction form
    48,532.40/72,809.40 = 18,947.60/x
  3. Step 3: Cross multiply
    48,532.40x = 72,809.40 × 18,947.60
  4. Step 4: Simplify right side
    48,532.40x = 1,379,563,387.44
  5. Step 5: Solve for x
    x = 1,379,563,387.44/48,532.40
  6. Step 6: Final answer
    x = 28,425.62

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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.