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Finding the Fourth Proportional to 43,866.66, 65,811.64 and 13,881.43

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Solution

The fourth proportional to 43,866.66, 65,811.64 and 13,881.43 is: 20,825.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,866.66 : 65,811.64 = 13,881.43 : x
  2. Step 2: Convert to fraction form
    43,866.66/65,811.64 = 13,881.43/x
  3. Step 3: Cross multiply
    43,866.66x = 65,811.64 × 13,881.43
  4. Step 4: Simplify right side
    43,866.66x = 913,559,673.85
  5. Step 5: Solve for x
    x = 913,559,673.85/43,866.66
  6. Step 6: Final answer
    x = 20,825.83

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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.