Home / 81,519.24-112,448.77-51,256.60

Finding the Fourth Proportional to 81,519.24, 112,448.77 and 51,256.60

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Solution

The fourth proportional to 81,519.24, 112,448.77 and 51,256.60 is: 70,704.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,519.24 : 112,448.77 = 51,256.60 : x
  2. Step 2: Convert to fraction form
    81,519.24/112,448.77 = 51,256.60/x
  3. Step 3: Cross multiply
    81,519.24x = 112,448.77 × 51,256.60
  4. Step 4: Simplify right side
    81,519.24x = 5,763,741,624.38
  5. Step 5: Solve for x
    x = 5,763,741,624.38/81,519.24
  6. Step 6: Final answer
    x = 70,704.06

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1.5x scale

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.