Home / 76,939.23-106,179.36-42,949.62

Finding the Fourth Proportional to 76,939.23, 106,179.36 and 42,949.62

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Solution

The fourth proportional to 76,939.23, 106,179.36 and 42,949.62 is: 59,272.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,939.23 : 106,179.36 = 42,949.62 : x
  2. Step 2: Convert to fraction form
    76,939.23/106,179.36 = 42,949.62/x
  3. Step 3: Cross multiply
    76,939.23x = 106,179.36 × 42,949.62
  4. Step 4: Simplify right side
    76,939.23x = 4,560,363,163.84
  5. Step 5: Solve for x
    x = 4,560,363,163.84/76,939.23
  6. Step 6: Final answer
    x = 59,272.27

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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.