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Finding the Fourth Proportional to 80,958.44, 121,443.42 and 25,553

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Solution

The fourth proportional to 80,958.44, 121,443.42 and 25,553 is: 38,331.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,958.44 : 121,443.42 = 25,553 : x
  2. Step 2: Convert to fraction form
    80,958.44/121,443.42 = 25,553/x
  3. Step 3: Cross multiply
    80,958.44x = 121,443.42 × 25,553
  4. Step 4: Simplify right side
    80,958.44x = 3,103,243,711.26
  5. Step 5: Solve for x
    x = 3,103,243,711.26/80,958.44
  6. Step 6: Final answer
    x = 38,331.32

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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.