Home / 81,141.66-111,977.78-45,335.61

Finding the Fourth Proportional to 81,141.66, 111,977.78 and 45,335.61

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Solution

The fourth proportional to 81,141.66, 111,977.78 and 45,335.61 is: 62,564.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,141.66 : 111,977.78 = 45,335.61 : x
  2. Step 2: Convert to fraction form
    81,141.66/111,977.78 = 45,335.61/x
  3. Step 3: Cross multiply
    81,141.66x = 111,977.78 × 45,335.61
  4. Step 4: Simplify right side
    81,141.66x = 5,076,580,736.07
  5. Step 5: Solve for x
    x = 5,076,580,736.07/81,141.66
  6. Step 6: Final answer
    x = 62,564.42

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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.