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Finding the Fourth Proportional to 54,993, 82,489.50 and 19,932.69

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Solution

The fourth proportional to 54,993, 82,489.50 and 19,932.69 is: 29,899.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,993 : 82,489.50 = 19,932.69 : x
  2. Step 2: Convert to fraction form
    54,993/82,489.50 = 19,932.69/x
  3. Step 3: Cross multiply
    54,993x = 82,489.50 × 19,932.69
  4. Step 4: Simplify right side
    54,993x = 1,644,237,631.76
  5. Step 5: Solve for x
    x = 1,644,237,631.76/54,993
  6. Step 6: Final answer
    x = 29,899.04

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Double scale
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Similar ratio
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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.