Home / 87,021.13-120,027.72-74,067.31

Finding the Fourth Proportional to 87,021.13, 120,027.72 and 74,067.31

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Solution

The fourth proportional to 87,021.13, 120,027.72 and 74,067.31 is: 102,160.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,021.13 : 120,027.72 = 74,067.31 : x
  2. Step 2: Convert to fraction form
    87,021.13/120,027.72 = 74,067.31/x
  3. Step 3: Cross multiply
    87,021.13x = 120,027.72 × 74,067.31
  4. Step 4: Simplify right side
    87,021.13x = 8,890,130,345.83
  5. Step 5: Solve for x
    x = 8,890,130,345.83/87,021.13
  6. Step 6: Final answer
    x = 102,160.59

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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.