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Finding the Fourth Proportional to 39,660, 54,730.80 and 22,893

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Solution

The fourth proportional to 39,660, 54,730.80 and 22,893 is: 31,592.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,660 : 54,730.80 = 22,893 : x
  2. Step 2: Convert to fraction form
    39,660/54,730.80 = 22,893/x
  3. Step 3: Cross multiply
    39,660x = 54,730.80 × 22,893
  4. Step 4: Simplify right side
    39,660x = 1,252,952,204.40
  5. Step 5: Solve for x
    x = 1,252,952,204.40/39,660
  6. Step 6: Final answer
    x = 31,592.34

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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.