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Finding the Fourth Proportional to 39,488.77, 54,494.37 and 21,583.77

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Solution

The fourth proportional to 39,488.77, 54,494.37 and 21,583.77 is: 29,785.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,488.77 : 54,494.37 = 21,583.77 : x
  2. Step 2: Convert to fraction form
    39,488.77/54,494.37 = 21,583.77/x
  3. Step 3: Cross multiply
    39,488.77x = 54,494.37 × 21,583.77
  4. Step 4: Simplify right side
    39,488.77x = 1,176,193,893.08
  5. Step 5: Solve for x
    x = 1,176,193,893.08/39,488.77
  6. Step 6: Final answer
    x = 29,785.53

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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.