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Finding the Fourth Proportional to 81,797.11, 112,878.38 and 45,497.77

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Solution

The fourth proportional to 81,797.11, 112,878.38 and 45,497.77 is: 62,786.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,797.11 : 112,878.38 = 45,497.77 : x
  2. Step 2: Convert to fraction form
    81,797.11/112,878.38 = 45,497.77/x
  3. Step 3: Cross multiply
    81,797.11x = 112,878.38 × 45,497.77
  4. Step 4: Simplify right side
    81,797.11x = 5,135,714,146.84
  5. Step 5: Solve for x
    x = 5,135,714,146.84/81,797.11
  6. Step 6: Final answer
    x = 62,786.01

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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.