Home / 81,519.74-112,449.46-51,257.10

Finding the Fourth Proportional to 81,519.74, 112,449.46 and 51,257.10

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Solution

The fourth proportional to 81,519.74, 112,449.46 and 51,257.10 is: 70,704.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,519.74 : 112,449.46 = 51,257.10 : x
  2. Step 2: Convert to fraction form
    81,519.74/112,449.46 = 51,257.10/x
  3. Step 3: Cross multiply
    81,519.74x = 112,449.46 × 51,257.10
  4. Step 4: Simplify right side
    81,519.74x = 5,763,833,216.17
  5. Step 5: Solve for x
    x = 5,763,833,216.17/81,519.74
  6. Step 6: Final answer
    x = 70,704.75

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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.