Home / 78,443.20-117,670.92-47,067.04

Finding the Fourth Proportional to 78,443.20, 117,670.92 and 47,067.04

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Solution

The fourth proportional to 78,443.20, 117,670.92 and 47,067.04 is: 70,604.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,443.20 : 117,670.92 = 47,067.04 : x
  2. Step 2: Convert to fraction form
    78,443.20/117,670.92 = 47,067.04/x
  3. Step 3: Cross multiply
    78,443.20x = 117,670.92 × 47,067.04
  4. Step 4: Simplify right side
    78,443.20x = 5,538,421,898.48
  5. Step 5: Solve for x
    x = 5,538,421,898.48/78,443.20
  6. Step 6: Final answer
    x = 70,604.23

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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.