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Finding the Fourth Proportional to 43,389, 65,089.98 and 15,693.48

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Solution

The fourth proportional to 43,389, 65,089.98 and 15,693.48 is: 23,542.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,389 : 65,089.98 = 15,693.48 : x
  2. Step 2: Convert to fraction form
    43,389/65,089.98 = 15,693.48/x
  3. Step 3: Cross multiply
    43,389x = 65,089.98 × 15,693.48
  4. Step 4: Simplify right side
    43,389x = 1,021,488,299.33
  5. Step 5: Solve for x
    x = 1,021,488,299.33/43,389
  6. Step 6: Final answer
    x = 23,542.56

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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.