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Finding the Fourth Proportional to 43,408.80, 64,918.80 and 36,410.40

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Solution

The fourth proportional to 43,408.80, 64,918.80 and 36,410.40 is: 54,452.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,408.80 : 64,918.80 = 36,410.40 : x
  2. Step 2: Convert to fraction form
    43,408.80/64,918.80 = 36,410.40/x
  3. Step 3: Cross multiply
    43,408.80x = 64,918.80 × 36,410.40
  4. Step 4: Simplify right side
    43,408.80x = 2,363,719,475.52
  5. Step 5: Solve for x
    x = 2,363,719,475.52/43,408.80
  6. Step 6: Final answer
    x = 54,452.54

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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.