Home / 82,018.08-123,027.12-19,688.58

Finding the Fourth Proportional to 82,018.08, 123,027.12 and 19,688.58

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Solution

The fourth proportional to 82,018.08, 123,027.12 and 19,688.58 is: 29,532.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,018.08 : 123,027.12 = 19,688.58 : x
  2. Step 2: Convert to fraction form
    82,018.08/123,027.12 = 19,688.58/x
  3. Step 3: Cross multiply
    82,018.08x = 123,027.12 × 19,688.58
  4. Step 4: Simplify right side
    82,018.08x = 2,422,229,294.29
  5. Step 5: Solve for x
    x = 2,422,229,294.29/82,018.08
  6. Step 6: Final answer
    x = 29,532.87

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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.