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Finding the Fourth Proportional to 43,788.42, 65,686.88 and 11,767.09

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Solution

The fourth proportional to 43,788.42, 65,686.88 and 11,767.09 is: 17,651.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,788.42 : 65,686.88 = 11,767.09 : x
  2. Step 2: Convert to fraction form
    43,788.42/65,686.88 = 11,767.09/x
  3. Step 3: Cross multiply
    43,788.42x = 65,686.88 × 11,767.09
  4. Step 4: Simplify right side
    43,788.42x = 772,943,428.78
  5. Step 5: Solve for x
    x = 772,943,428.78/43,788.42
  6. Step 6: Final answer
    x = 17,651.78

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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.