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Finding the Fourth Proportional to 86,018.97, 129,046.89 and 29,860.86

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Solution

The fourth proportional to 86,018.97, 129,046.89 and 29,860.86 is: 44,797.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,018.97 : 129,046.89 = 29,860.86 : x
  2. Step 2: Convert to fraction form
    86,018.97/129,046.89 = 29,860.86/x
  3. Step 3: Cross multiply
    86,018.97x = 129,046.89 × 29,860.86
  4. Step 4: Simplify right side
    86,018.97x = 3,853,451,115.73
  5. Step 5: Solve for x
    x = 3,853,451,115.73/86,018.97
  6. Step 6: Final answer
    x = 44,797.69

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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.