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Finding the Fourth Proportional to 48,383.45, 72,579.74 and 18,803.55

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Solution

The fourth proportional to 48,383.45, 72,579.74 and 18,803.55 is: 28,207.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,383.45 : 72,579.74 = 18,803.55 : x
  2. Step 2: Convert to fraction form
    48,383.45/72,579.74 = 18,803.55/x
  3. Step 3: Cross multiply
    48,383.45x = 72,579.74 × 18,803.55
  4. Step 4: Simplify right side
    48,383.45x = 1,364,756,676.06
  5. Step 5: Solve for x
    x = 1,364,756,676.06/48,383.45
  6. Step 6: Final answer
    x = 28,207.10

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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.