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Finding the Fourth Proportional to 101,454, 140,001.38 and 55,512.64

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Solution

The fourth proportional to 101,454, 140,001.38 and 55,512.64 is: 76,604.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,454 : 140,001.38 = 55,512.64 : x
  2. Step 2: Convert to fraction form
    101,454/140,001.38 = 55,512.64/x
  3. Step 3: Cross multiply
    101,454x = 140,001.38 × 55,512.64
  4. Step 4: Simplify right side
    101,454x = 7,771,846,207.44
  5. Step 5: Solve for x
    x = 7,771,846,207.44/101,454
  6. Step 6: Final answer
    x = 76,604.63

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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.