Home / 76,857.20-106,062.71-42,865.73

Finding the Fourth Proportional to 76,857.20, 106,062.71 and 42,865.73

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Solution

The fourth proportional to 76,857.20, 106,062.71 and 42,865.73 is: 59,154.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,857.20 : 106,062.71 = 42,865.73 : x
  2. Step 2: Convert to fraction form
    76,857.20/106,062.71 = 42,865.73/x
  3. Step 3: Cross multiply
    76,857.20x = 106,062.71 × 42,865.73
  4. Step 4: Simplify right side
    76,857.20x = 4,546,454,745.29
  5. Step 5: Solve for x
    x = 4,546,454,745.29/76,857.20
  6. Step 6: Final answer
    x = 59,154.58

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1.5x scale

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.