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Finding the Fourth Proportional to 48,449.20, 72,652.20 and 18,857.20

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Solution

The fourth proportional to 48,449.20, 72,652.20 and 18,857.20 is: 28,277.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,449.20 : 72,652.20 = 18,857.20 : x
  2. Step 2: Convert to fraction form
    48,449.20/72,652.20 = 18,857.20/x
  3. Step 3: Cross multiply
    48,449.20x = 72,652.20 × 18,857.20
  4. Step 4: Simplify right side
    48,449.20x = 1,370,017,065.84
  5. Step 5: Solve for x
    x = 1,370,017,065.84/48,449.20
  6. Step 6: Final answer
    x = 28,277.39

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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.