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Finding the Fourth Proportional to 39,951.71, 55,135.04 and 22,955.68

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Solution

The fourth proportional to 39,951.71, 55,135.04 and 22,955.68 is: 31,679.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,951.71 : 55,135.04 = 22,955.68 : x
  2. Step 2: Convert to fraction form
    39,951.71/55,135.04 = 22,955.68/x
  3. Step 3: Cross multiply
    39,951.71x = 55,135.04 × 22,955.68
  4. Step 4: Simplify right side
    39,951.71x = 1,265,662,335.03
  5. Step 5: Solve for x
    x = 1,265,662,335.03/39,951.71
  6. Step 6: Final answer
    x = 31,679.80

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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.