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Finding the Fourth Proportional to 48,869.20, 73,460.40 and 45,402.40

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Solution

The fourth proportional to 48,869.20, 73,460.40 and 45,402.40 is: 68,249.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,869.20 : 73,460.40 = 45,402.40 : x
  2. Step 2: Convert to fraction form
    48,869.20/73,460.40 = 45,402.40/x
  3. Step 3: Cross multiply
    48,869.20x = 73,460.40 × 45,402.40
  4. Step 4: Simplify right side
    48,869.20x = 3,335,278,464.96
  5. Step 5: Solve for x
    x = 3,335,278,464.96/48,869.20
  6. Step 6: Final answer
    x = 68,249.09

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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.