Home / 81,277.44-121,934.52-43,836.72

Finding the Fourth Proportional to 81,277.44, 121,934.52 and 43,836.72

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Solution

The fourth proportional to 81,277.44, 121,934.52 and 43,836.72 is: 65,764.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,277.44 : 121,934.52 = 43,836.72 : x
  2. Step 2: Convert to fraction form
    81,277.44/121,934.52 = 43,836.72/x
  3. Step 3: Cross multiply
    81,277.44x = 121,934.52 × 43,836.72
  4. Step 4: Simplify right side
    81,277.44x = 5,345,209,411.57
  5. Step 5: Solve for x
    x = 5,345,209,411.57/81,277.44
  6. Step 6: Final answer
    x = 65,764.98

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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.