Home / 87,638.28-120,923.82-53,654.52

Finding the Fourth Proportional to 87,638.28, 120,923.82 and 53,654.52

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Solution

The fourth proportional to 87,638.28, 120,923.82 and 53,654.52 is: 74,032.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,638.28 : 120,923.82 = 53,654.52 : x
  2. Step 2: Convert to fraction form
    87,638.28/120,923.82 = 53,654.52/x
  3. Step 3: Cross multiply
    87,638.28x = 120,923.82 × 53,654.52
  4. Step 4: Simplify right side
    87,638.28x = 6,488,109,518.67
  5. Step 5: Solve for x
    x = 6,488,109,518.67/87,638.28
  6. Step 6: Final answer
    x = 74,032.83

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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.