Home / 82,412.71-124,236.74-76,919.86

Finding the Fourth Proportional to 82,412.71, 124,236.74 and 76,919.86

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Solution

The fourth proportional to 82,412.71, 124,236.74 and 76,919.86 is: 115,956.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,412.71 : 124,236.74 = 76,919.86 : x
  2. Step 2: Convert to fraction form
    82,412.71/124,236.74 = 76,919.86/x
  3. Step 3: Cross multiply
    82,412.71x = 124,236.74 × 76,919.86
  4. Step 4: Simplify right side
    82,412.71x = 9,556,272,647.66
  5. Step 5: Solve for x
    x = 9,556,272,647.66/82,412.71
  6. Step 6: Final answer
    x = 115,956.30

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.