Home / 78,074.64-117,067.56-24,756.78

Finding the Fourth Proportional to 78,074.64, 117,067.56 and 24,756.78

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Solution

The fourth proportional to 78,074.64, 117,067.56 and 24,756.78 is: 37,121.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,074.64 : 117,067.56 = 24,756.78 : x
  2. Step 2: Convert to fraction form
    78,074.64/117,067.56 = 24,756.78/x
  3. Step 3: Cross multiply
    78,074.64x = 117,067.56 × 24,756.78
  4. Step 4: Simplify right side
    78,074.64x = 2,898,215,828.06
  5. Step 5: Solve for x
    x = 2,898,215,828.06/78,074.64
  6. Step 6: Final answer
    x = 37,121.09

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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.