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Finding the Fourth Proportional to 43,919, 65,890.95 and 17,642.19

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Solution

The fourth proportional to 43,919, 65,890.95 and 17,642.19 is: 26,468.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,919 : 65,890.95 = 17,642.19 : x
  2. Step 2: Convert to fraction form
    43,919/65,890.95 = 17,642.19/x
  3. Step 3: Cross multiply
    43,919x = 65,890.95 × 17,642.19
  4. Step 4: Simplify right side
    43,919x = 1,162,460,659.18
  5. Step 5: Solve for x
    x = 1,162,460,659.18/43,919
  6. Step 6: Final answer
    x = 26,468.29

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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.