Home / 82,501.40-123,752.10-20,171.90

Finding the Fourth Proportional to 82,501.40, 123,752.10 and 20,171.90

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Solution

The fourth proportional to 82,501.40, 123,752.10 and 20,171.90 is: 30,257.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,501.40 : 123,752.10 = 20,171.90 : x
  2. Step 2: Convert to fraction form
    82,501.40/123,752.10 = 20,171.90/x
  3. Step 3: Cross multiply
    82,501.40x = 123,752.10 × 20,171.90
  4. Step 4: Simplify right side
    82,501.40x = 2,496,314,985.99
  5. Step 5: Solve for x
    x = 2,496,314,985.99/82,501.40
  6. Step 6: Final answer
    x = 30,257.85

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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.