Home / 82,011.72-123,018.78-25,850.76

Finding the Fourth Proportional to 82,011.72, 123,018.78 and 25,850.76

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Solution

The fourth proportional to 82,011.72, 123,018.78 and 25,850.76 is: 38,776.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,011.72 : 123,018.78 = 25,850.76 : x
  2. Step 2: Convert to fraction form
    82,011.72/123,018.78 = 25,850.76/x
  3. Step 3: Cross multiply
    82,011.72x = 123,018.78 × 25,850.76
  4. Step 4: Simplify right side
    82,011.72x = 3,180,128,957.27
  5. Step 5: Solve for x
    x = 3,180,128,957.27/82,011.72
  6. Step 6: Final answer
    x = 38,776.52

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1.5x scale

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.