Home / 87,129.87-120,238.66-48,367.27

Finding the Fourth Proportional to 87,129.87, 120,238.66 and 48,367.27

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Solution

The fourth proportional to 87,129.87, 120,238.66 and 48,367.27 is: 66,746.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,129.87 : 120,238.66 = 48,367.27 : x
  2. Step 2: Convert to fraction form
    87,129.87/120,238.66 = 48,367.27/x
  3. Step 3: Cross multiply
    87,129.87x = 120,238.66 × 48,367.27
  4. Step 4: Simplify right side
    87,129.87x = 5,815,615,490.82
  5. Step 5: Solve for x
    x = 5,815,615,490.82/87,129.87
  6. Step 6: Final answer
    x = 66,746.52

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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.