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Finding the Fourth Proportional to 101,713.78, 140,324.97 and 63,451

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Solution

The fourth proportional to 101,713.78, 140,324.97 and 63,451 is: 87,537.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,713.78 : 140,324.97 = 63,451 : x
  2. Step 2: Convert to fraction form
    101,713.78/140,324.97 = 63,451/x
  3. Step 3: Cross multiply
    101,713.78x = 140,324.97 × 63,451
  4. Step 4: Simplify right side
    101,713.78x = 8,903,759,671.47
  5. Step 5: Solve for x
    x = 8,903,759,671.47/101,713.78
  6. Step 6: Final answer
    x = 87,537.40

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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.