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Finding the Fourth Proportional to 39,773.87, 54,886.47 and 21,867.81

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Solution

The fourth proportional to 39,773.87, 54,886.47 and 21,867.81 is: 30,176.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,773.87 : 54,886.47 = 21,867.81 : x
  2. Step 2: Convert to fraction form
    39,773.87/54,886.47 = 21,867.81/x
  3. Step 3: Cross multiply
    39,773.87x = 54,886.47 × 21,867.81
  4. Step 4: Simplify right side
    39,773.87x = 1,200,246,788.19
  5. Step 5: Solve for x
    x = 1,200,246,788.19/39,773.87
  6. Step 6: Final answer
    x = 30,176.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.