Home / 80,686.28-111,358.74-48,422.36

Finding the Fourth Proportional to 80,686.28, 111,358.74 and 48,422.36

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Solution

The fourth proportional to 80,686.28, 111,358.74 and 48,422.36 is: 66,829.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,686.28 : 111,358.74 = 48,422.36 : x
  2. Step 2: Convert to fraction form
    80,686.28/111,358.74 = 48,422.36/x
  3. Step 3: Cross multiply
    80,686.28x = 111,358.74 × 48,422.36
  4. Step 4: Simplify right side
    80,686.28x = 5,392,252,997.43
  5. Step 5: Solve for x
    x = 5,392,252,997.43/80,686.28
  6. Step 6: Final answer
    x = 66,829.86

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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.