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Finding the Fourth Proportional to 43,445.52, 65,171.92 and 13,867.56

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Solution

The fourth proportional to 43,445.52, 65,171.92 and 13,867.56 is: 20,802.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,445.52 : 65,171.92 = 13,867.56 : x
  2. Step 2: Convert to fraction form
    43,445.52/65,171.92 = 13,867.56/x
  3. Step 3: Cross multiply
    43,445.52x = 65,171.92 × 13,867.56
  4. Step 4: Simplify right side
    43,445.52x = 903,775,510.92
  5. Step 5: Solve for x
    x = 903,775,510.92/43,445.52
  6. Step 6: Final answer
    x = 20,802.50

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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.