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Finding the Fourth Proportional to 73,291.48, 101,142.78 and 39,757.72

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Solution

The fourth proportional to 73,291.48, 101,142.78 and 39,757.72 is: 54,865.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,291.48 : 101,142.78 = 39,757.72 : x
  2. Step 2: Convert to fraction form
    73,291.48/101,142.78 = 39,757.72/x
  3. Step 3: Cross multiply
    73,291.48x = 101,142.78 × 39,757.72
  4. Step 4: Simplify right side
    73,291.48x = 4,021,206,327.26
  5. Step 5: Solve for x
    x = 4,021,206,327.26/73,291.48
  6. Step 6: Final answer
    x = 54,865.95

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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.