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Finding the Fourth Proportional to 34,751.60, 47,939.54 and 21,983.28

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Solution

The fourth proportional to 34,751.60, 47,939.54 and 21,983.28 is: 30,325.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,751.60 : 47,939.54 = 21,983.28 : x
  2. Step 2: Convert to fraction form
    34,751.60/47,939.54 = 21,983.28/x
  3. Step 3: Cross multiply
    34,751.60x = 47,939.54 × 21,983.28
  4. Step 4: Simplify right side
    34,751.60x = 1,053,868,330.89
  5. Step 5: Solve for x
    x = 1,053,868,330.89/34,751.60
  6. Step 6: Final answer
    x = 30,325.75

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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.