Home / 82,021.70-123,032.55-19,692.20

Finding the Fourth Proportional to 82,021.70, 123,032.55 and 19,692.20

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Solution

The fourth proportional to 82,021.70, 123,032.55 and 19,692.20 is: 29,538.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,021.70 : 123,032.55 = 19,692.20 : x
  2. Step 2: Convert to fraction form
    82,021.70/123,032.55 = 19,692.20/x
  3. Step 3: Cross multiply
    82,021.70x = 123,032.55 × 19,692.20
  4. Step 4: Simplify right side
    82,021.70x = 2,422,781,581.11
  5. Step 5: Solve for x
    x = 2,422,781,581.11/82,021.70
  6. Step 6: Final answer
    x = 29,538.30

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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.