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Finding the Fourth Proportional to 39,564.48, 54,599.01 and 21,659.49

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Solution

The fourth proportional to 39,564.48, 54,599.01 and 21,659.49 is: 29,890.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,564.48 : 54,599.01 = 21,659.49 : x
  2. Step 2: Convert to fraction form
    39,564.48/54,599.01 = 21,659.49/x
  3. Step 3: Cross multiply
    39,564.48x = 54,599.01 × 21,659.49
  4. Step 4: Simplify right side
    39,564.48x = 1,182,586,711.10
  5. Step 5: Solve for x
    x = 1,182,586,711.10/39,564.48
  6. Step 6: Final answer
    x = 29,890.11

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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.