Home / 76,138.08-105,067.44-42,601.92

Finding the Fourth Proportional to 76,138.08, 105,067.44 and 42,601.92

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Solution

The fourth proportional to 76,138.08, 105,067.44 and 42,601.92 is: 58,788.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,138.08 : 105,067.44 = 42,601.92 : x
  2. Step 2: Convert to fraction form
    76,138.08/105,067.44 = 42,601.92/x
  3. Step 3: Cross multiply
    76,138.08x = 105,067.44 × 42,601.92
  4. Step 4: Simplify right side
    76,138.08x = 4,476,074,673.48
  5. Step 5: Solve for x
    x = 4,476,074,673.48/76,138.08
  6. Step 6: Final answer
    x = 58,788.91

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1.5x scale

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.