Home / 80,860.58-121,307.68-34,113.86

Finding the Fourth Proportional to 80,860.58, 121,307.68 and 34,113.86

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Solution

The fourth proportional to 80,860.58, 121,307.68 and 34,113.86 is: 51,177.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,860.58 : 121,307.68 = 34,113.86 : x
  2. Step 2: Convert to fraction form
    80,860.58/121,307.68 = 34,113.86/x
  3. Step 3: Cross multiply
    80,860.58x = 121,307.68 × 34,113.86
  4. Step 4: Simplify right side
    80,860.58x = 4,138,273,212.44
  5. Step 5: Solve for x
    x = 4,138,273,212.44/80,860.58
  6. Step 6: Final answer
    x = 51,177.88

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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.