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Finding the Fourth Proportional to 78,433.72, 117,652.10 and 25,843.66

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Solution

The fourth proportional to 78,433.72, 117,652.10 and 25,843.66 is: 38,765.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,433.72 : 117,652.10 = 25,843.66 : x
  2. Step 2: Convert to fraction form
    78,433.72/117,652.10 = 25,843.66/x
  3. Step 3: Cross multiply
    78,433.72x = 117,652.10 × 25,843.66
  4. Step 4: Simplify right side
    78,433.72x = 3,040,560,447.34
  5. Step 5: Solve for x
    x = 3,040,560,447.34/78,433.72
  6. Step 6: Final answer
    x = 38,765.99

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1.5x scale

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.