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Finding the Fourth Proportional to 87,262.44, 120,432.90 and 51,455.64

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Solution

The fourth proportional to 87,262.44, 120,432.90 and 51,455.64 is: 71,015.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,262.44 : 120,432.90 = 51,455.64 : x
  2. Step 2: Convert to fraction form
    87,262.44/120,432.90 = 51,455.64/x
  3. Step 3: Cross multiply
    87,262.44x = 120,432.90 × 51,455.64
  4. Step 4: Simplify right side
    87,262.44x = 6,196,951,946.56
  5. Step 5: Solve for x
    x = 6,196,951,946.56/87,262.44
  6. Step 6: Final answer
    x = 71,015.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.