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Finding the Fourth Proportional to 43,808.80, 65,626.80 and 40,698.40

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Solution

The fourth proportional to 43,808.80, 65,626.80 and 40,698.40 is: 60,967.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,808.80 : 65,626.80 = 40,698.40 : x
  2. Step 2: Convert to fraction form
    43,808.80/65,626.80 = 40,698.40/x
  3. Step 3: Cross multiply
    43,808.80x = 65,626.80 × 40,698.40
  4. Step 4: Simplify right side
    43,808.80x = 2,670,905,757.12
  5. Step 5: Solve for x
    x = 2,670,905,757.12/43,808.80
  6. Step 6: Final answer
    x = 60,967.33

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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.