Home / 82,317.54-123,476.31-19,987.62

Finding the Fourth Proportional to 82,317.54, 123,476.31 and 19,987.62

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Solution

The fourth proportional to 82,317.54, 123,476.31 and 19,987.62 is: 29,981.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,317.54 : 123,476.31 = 19,987.62 : x
  2. Step 2: Convert to fraction form
    82,317.54/123,476.31 = 19,987.62/x
  3. Step 3: Cross multiply
    82,317.54x = 123,476.31 × 19,987.62
  4. Step 4: Simplify right side
    82,317.54x = 2,467,997,563.28
  5. Step 5: Solve for x
    x = 2,467,997,563.28/82,317.54
  6. Step 6: Final answer
    x = 29,981.43

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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.