Home / 83,729.64-115,540.20-47,911.44

Finding the Fourth Proportional to 83,729.64, 115,540.20 and 47,911.44

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Solution

The fourth proportional to 83,729.64, 115,540.20 and 47,911.44 is: 66,113.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,729.64 : 115,540.20 = 47,911.44 : x
  2. Step 2: Convert to fraction form
    83,729.64/115,540.20 = 47,911.44/x
  3. Step 3: Cross multiply
    83,729.64x = 115,540.20 × 47,911.44
  4. Step 4: Simplify right side
    83,729.64x = 5,535,697,359.89
  5. Step 5: Solve for x
    x = 5,535,697,359.89/83,729.64
  6. Step 6: Final answer
    x = 66,113.95

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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.